It had been a week since Sam had accidentally learned about Lucy's BDSM fantasies. She had been devastated, at first, fearing that it would scare him off, but was delighted to discover that he had similar desires. Anxiety turned to excitement as she daydreamed about what they might get up to next time they were together.

However, she would have to wait. They both had a busy week and wouldn't get to spend any real time together until the weekend. And there was a lot to do before they could have any fun.

Lucy's new flat was a one-bedroom affair above a popular sandwich franchise on a small high street on the outskirts of town. It was in the attic, so the ceilings were an odd shape, but it was surprisingly spacious. It included a large kitchen-slash-living area and a decent-sized bedroom with an en-suite bathroom. The latter contained a bath that looked big enough for two, a theory that Sam had said he was keen to test as soon as possible.

The only problem was that it was a bit run-down, but Sam had offered to help spruce it up a bit before Lucy unpacked too much of her stuff. Sam's mum had been an interior designer and he had done a few jobs for her over the years, so he was pretty handy with a screwdriver and a paintbrush.

First, though, they had had to deal with the contractors. The plumber was the first to arrive. Lucy greeted him meekly and led him upstairs where Sam stepped in, pointing him to the various jobs and chatting to him as he worked. Lucy noticed how Sam seemed to effortlessly take charge of the situation, as well as how confident and at ease he seemed, and soon realised that he was also keeping an eye on the man to make sure he did his job properly. This was a side of Sam that Lucy had never really seen before and it excited her immensely, particularly as she thought back to the fantasies that they had shared the previous week!

At one point, Lucy walked into the bedroom to see Sam assembling some furniture and chatting to the plumber as he worked on the radiator. On seeing her, Sam smiled and said to the plumber, "do you want a drink, by the way? I'm sure Lucy will sort some tea or coffee for you, won't you pet?" Their eyes met and Lucy saw an excited glint in those dark brown eyes. Lucy had noticed the extra emphasis that Sam had put on the last word, and - though she was nervous that the plumber would have noticed it too - a shiver of excitement shot through her as she bustled out of the room.

A few minutes later, having delivered the mugs, Sam said, "thank you, dear," and squeezed her ass as she turned to leave. Lucy jumped but managed not to squeal, though her face turned bright red and she nearly spilt her tea. Her heart was pounding in her chest, but when she looked around she saw that the plumber's attention was still focused on his work.

She looked at Sam, who winked at her, a cheeky grin on his face. She knew, of course, that he was just experimenting with his new role of 'Master'.

And she loved it.

---

Later, after they had eaten lunch and the contractors had left, Lucy went to clean the kitchen and Sam started putting up some shelves for Lucy's extensive collection of books and DVDs.

It was late July and, even with all the windows open, it was almost unbearably hot in the flat. Lucy had her long, reddish-brown hair tied up in a ponytail and was wearing a black vest top with denim shorts. Lucy had been reluctant to wear the outfit, but it was the only thing she had that was bearable in the immense heat. Sam, however, thought that her ample ass looked amazing in the shorts and that the top showed off her curvy figure and huge boobs perfectly, and had said so. Her self-consciousness was beginning to melt away and she was starting to feel more and more comfortable around him.

Her task complete, Lucy stood in the kitchen holding two cups of tea and watched as Sam cut some wood with a confident sawing motion. He was shirtless and was wearing an old pair of jeans, which had a tear in one knee and were covered in splatters of paint. Her eyes scanned his body, which was beautifully toned, with just the right amount of hair in the right places. She could see his muscles undulating with each movement and his skin glistened slightly in the sunlight.

"Is one of those for me?" he said, bringing her suddenly back to the real world.

"Huh?" she said, realising that she had been staring for some time. She handed him one of the mugs.

"Thanks, pet," he said, leaning down to kiss her on the forehead. She could smell him; an intoxicating mixture of deodorant and hard work. She bit her lip as she pulled away. "Nearly finished", he added, indicating the wall behind him, where a neglected alcove was now full of bookshelves. He had done a great job; the place looked so much better already.

He perched on the back of the dust-sheet-covered sofa and took a sip from his mug. She admired his body for a while longer before moving to stand next to him. She rested her head on his shoulder and he put his arm around her, caressing the exposed skin of her upper arm, which tingled at his touch. She looked up at the shelves again.

"It looks amazing," she said. "Thank you so much." He squeezed her.

"No worries, little one," he said and kissed the top of her head.

"No, seriously," she said, pulling away and turning to look up at him with her big, green eyes. "I'd never have got any of this done if I was here on my own."

"It's okay," Sam said, squeezing her again. "You can thank me properly later!" he added, with a wink.

---

When they were done for the day, Sam took a shower while Lucy began to unpack the rest of her clothes. She was sitting on her bed when Sam emerged from the bathroom. As she looked up, he stood aside and gestured theatrically towards the door. She peered inside to see that he had run a bath for her, complete with a bath bomb. The water was purple - her favourite colour - and full of gold sparkles. The soothing scent of lavender filled the air.

"Aww, thanks." She hugged him and he slapped her playfully on the ass as she walked past him. She pulled off her clothes and lowered herself gratefully into the hot water. Sam was leaning against the door frame, watching her with a wicked smile on his face.

"Are you just going to stand there?" Lucy said. "Or are you going to test your theory?" She gestured towards the empty space in the tub, inviting him to join her.

"Not tonight, babe," Sam said. "You just relax, you've earned it." And with that, he left her to wallow in the warm water.

A while later, Lucy climbed out of the bath, dried herself off and threw on her robe, feeling utterly relaxed. She opened the door, then froze. Sam was standing beside the bed, wearing dark suit trousers, a long-sleeved grey shirt and navy blue tie. His sleeves were rolled up to the elbow, the tie was roguishly loosened and the top buttons of his shirt were undone.

"What's going on?" she said, looking around. He had adjusted her bedside lamp so that it lit the room more intimately and music was playing from the speaker next to it.

"Well," Sam said, smiling. "I was thinking about last week." Lucy's heart started to beat faster. "I know you've done some of this 'kinky stuff' before, but it's kinda new to me. So, I thought we should take it slow. Ease ourselves into it."

"OK," Lucy said, filling with nervous excitement.

"OK," Sam said. "So, do you trust me?"

"Yes," Lucy said.

"Yes, what?" Sam said, more firmly.

"Yes, Master," Lucy said, biting her lip. She could feel her face turning red.

"That's better," Sam said, with a lopsided smile. "Now, you're going to do exactly as I tell you, understand?"

"Yes, sir."

"Right, first of all, I'm going to put this on you," he said, walking towards her and pulling at his tie. Instinctively, she turned to watch him as he walked past her.

"No, you don't," he said. "Keep facing forward." She did as she was told and Sam moved around behind her.

And then it all went dark.

Lucy had to take a couple of deep breaths to slow her heart, which was really racing now.

"Now, let's just move you over here." Sam grabbed her shoulders and guided her a few steps across the room. Lucy was pretty sure that she was now standing in front of the mirrored wardrobe doors.

"Next," Sam said, "I think I'm going to take this off." He undid her robe and parted it, teasing the material across her shoulders until it reached the point of no return and slid to the floor. Her skin seemed to have become incredibly sensitive. The room was pleasantly warm now that the sun had set but she had goosebumps. She was almost overwhelmed with the sensation of his fingertips sliding across her skin. And, she knew, he was just getting started! She felt Sam's hands glide slowly down her back. Then he let go of her for a second before slapping her firmly on the ass. She jumped, gasped and couldn't help but let out a small moan, which he echoed.

"Mmmmm, so sexy," he whispered in her ear. She realised that he must be looking at her naked, curvy body reflected in the mirror as he toyed with her. She heard movement and, instinctively, turned her head, even though she couldn't see. He must have been watching her because he said, "ah ah, I told you to face forward." His words were playful but there was that hint of authority in his voice. Lucy tried to stay as still as possible as she heard more rustling behind her.

"Okay, so," Sam said. "I think we'll put this on next." Lucy felt a cool, silky material against her skin as he tied what felt like another tie around her wrists, binding her arms behind her back. "How does that feel?" Sam whispered in her ear.

"Could be tighter," Lucy said, cheekily.

"Oh really?" Sam said, chuckling and tightening it even further. He grabbed her shoulders again and turned her so that they were facing each other, then gently-but-firmly encouraged her downwards. Lucy knew exactly what he had in mind and allowed herself to be lowered to her knees. As she landed, she was pleasantly surprised to find that Sam had placed a pillow on the floor for her.

"Open up," he said and she heard him unzip his trousers. She obeyed and, a few moments later, she felt Sam's cock pressing against her lips. Sitting back as she was, she was level with the base of his erect shaft. She moved forward and up onto her knees, kissing her way slowly up his length.

"Mmmm," he moaned encouragingly, as her questing lips found the tip and she took it hungrily into her mouth. "Now, let's see what you can do when you only have your mouth to work with."

Lucy was so turned on. Sam was in complete control; he could do pretty much anything to her right now and there wouldn't be much that she could about it. She struggled experimentally with her restraints, but he had tied them well and there was no escape.

Sam moaned again and her attention returned to her task. From the hardness between her lips, she could tell how much Sam was enjoying tis, which only turned her on even more. So she sucked and she bobbed her head and she worked his cock with her tongue and her lips, slowly increasing the pace and pressure as Sam made encouraging noises in the blackness above her. Occasionally, she would moan in return and feel him tremble with sensation. His rigid shaft was pretty thick and her jaw was starting to ache, but she ignored it and pressed on. She was enjoying this so much and she found that she really wanted to make him cum.

But, just as she could feel his cock beginning to pulse between her lips, he pulled away.

"Mmmmm, good girl," he said, breathing heavily, "but I'm not done with you yet."

He pulled her to her feet and kissed her, passionately. Then he untied the tie from around her left wrist, but before she had a chance to do anything, he had pulled her arms around and retied it so that her hands were now bound in front of her.

His hands slid up her arms towards her shoulders as he kissed her. Then, suddenly and without warning, he pushed her backwards onto the bed. Before she knew what was happening, he was on top of her, pinning her down. He lifted her bound hands above her head, holding them firmly in place.

Resting on his elbow and keeping a tight grip on her wrist with one hand, he leaned down to kiss her, biting her lower lip as the kiss became more passionate. Meanwhile, his other hand had strayed down to her breasts, which he fondled roughly for a while, before sliding further down and teasing the area around her neatly trimmed pussy. Each sweeping motion of his fingertips got closer and closer to her most sensitive area.

"Mmmm, please," she moaned, when the teasing became too much to bear.

"Please what?"

"Please touch me." He slapped her.

"What do you say?"

"Please, master."

"Mmmm, that's better."

He slid his finger between her pussy lips, stroking her clit with slowly mounting speed and pressure. Then he added a second finger. She could feel the orgasm building within her, tantalisingly slowly. He seemed to sense its approach and slowed, much to her frustration, keeping her right on the edge for some time before finally allowing her to cum. She was at his mercy, everything was under his control and, frustrating as it was to be teased like this, there was a newly-awakened part of her that loved it. Her entire body shook as the orgasm spread through her.

"Roll over for me," Sam said, when she had stopped trembling. Obediently, but with some difficulty as her hands were still bound together, Lucy managed to roll onto her front.

"Good girl," Sam purred and she felt him move into position between her legs.

She really wanted him to fuck her, but she would have to wait. Sam slid one finger, then two into her pussy from behind. As he fucked her with his fingers, he reached up and grabbed a handful of her long, auburn hair. Sam was still testing Lucy's limits and didn't pull too hard, but just hard enough to lift her head and make it clear that he was in control. It wasn't long before her body began to shake once again.

When the aftershocks had subsided, he shifted position and slid the tip of his cock, which was at full attention, in between her lower lips. For a while he teased her with it, sliding it from her clit to her entrance, circling it and then sliding it back again.

"Fuck me," she whispered, half to herself.

"What was that?" Apparently, she had been louder than she thought.

"Please, master," she begged, breathlessly, "Fuck me. Pleeeease!"

"As you wish, my pet," Sam said. She felt the pressure of his head against her opening, then suddenly he was inside her. She gasped. She was so wet, and he was so hard, that he had been able to slide most of his cock into her in a single motion. He moved back and forth until his full length was inside her. It felt incredible and Lucy began to move her hips against him, trying to encourage him to go faster.

He stopped suddenly, his entire length buried inside her. For several seconds there was no movement, but she could feel him throbbing inside her. It felt amazing.

Then there as a loud SLAP, and moments later the pain reached her brain. Sam had brought his hand down firmly on her right ass cheek.

"Let's not forget who's in control here, shall we?"

"Yes, sir," she said. She lay still and waiting for Sam to make the next move. There was another almighty SLAP. She gasped and felt her muscles clench involuntarily around Sam's cock.

"Mmmm you like that?" Sam growled.

"Yes," Lucy gasped. He grabbed her hips and thrust a few more times and then; SLAP!

"Yes, what?"

"Yes, master," Lucy said.

"Mmmm, good girl," he said and spanked her again, even harder this time. The impact sent shivers throughout her entire body and this time she had to bury her face in the pillow to muffle her sounds of pleasure. Some more thrusting, then: SLAP! This time, the sensation was right on the edge between pleasure and pain and it pushed her over the edge and into an uncontrollable orgasm. Sam slid out of her as her whole body shook violently.

"Mmmm, so sexy," Sam moaned as he grabbed her and rolled her over onto her back again as her body continued to shake. Her bound hands came to rest somewhere above her head. Sam lifted her legs into the air, kissing the sole of her foot and then each toe in turn, then slid his cock back into her. Soon he was pounding her roughly again and it wasn't long before he couldn't hold back any longer.

"Mmmm, I'm cumming baby," Sam growled, and moments later Lucy felt him pull out of her. He must have cum hard, as she felt spurts of hot, sticky cum hit her ample breasts, the rest - and it felt like there was a lot of it - landing on her belly.

Lucy felt Sam collapse onto the bed next to her. Then, after a few moments, he removed the blindfold. As her eyes readjusted to the light, she looked down to see the splatters of cum on her tits, where he had marked her as his own.

"Yeah, sorry about that," Sam said, not looking sorry at all. "I've always wanted to do that," he added as he released her from restraints. "Here," he said, passing her a box of tissues. She cleaned herself up, impressed by the volume and force of Sam’s cum and thrilled that it was because of her. In her post-orgasmic state, she couldn't help but feel a bit dirty and embarrassed, but she also loved it. She was excited to be living out some of her fantasies and equally excited that Sam was starting to relax, to take charge and to indulge some urges of his own.

Once she had cleaned up, she lay back with her head on Sam's chest and his arms around her. She still felt tender and slightly vulnerable after what had just happened, but as she cuddled into him, she also felt safe, warm and immensely satisfied. They kissed gently for a while, Sam's hand running reassuringly up and down her back, and it wasn't long before she fell asleep in his arms.

---

Lucy awoke a few hours later. It was dark and quiet now; the only sound came from Sam, who was lying on the bed with his back to her, breathing deeply. His legs were tangled in the blankets and the exposed parts of his still-naked body glistened slightly in the orange light that was filtering through the half-open curtains.

She got up to go to the bathroom and was halfway there when it all came back to her. Had it been a dream? But then, her foot caught something on the floor, which turned out to be one of Sam's discarded ties.

As she washed her hands, she noticed her reflection, which was being bounced into the mirror from the dark window. She turned to get a proper look and saw a shape almost like a handprint, still bright red, on her right butt cheek. Impressive, she thought with a smile, as she guessed it had been at least three hours since Sam had made it!

A few minutes later, Lucy climbed back into bed. Sam groaned and rolled over to put his arm across her belly without properly waking. Lucy smiled and drifted back off to sleep.