Half an hour ago, I was knocking on the door, hoping that Jenny, my girlfriend of six weeks, would be alone in the house. College restarts in two weeks, and by the time the term ends, we'll have drifted apart. Besides, I was horny as hell, and Jenny had great tits.

Right now, I'm lying next to a girl I hardly know. She's on her side, leaning towards me and working her hand slowly up and down on my shaft, pausing now and then to lean forward to lick and kiss my cockhead. I am about to explode for the second time since I walked in here. She already has a pussy full of my juice, and if I get my way, her tits are about to get coated.

It wasn't quite what I'd planned, but it's not a bad result. So far...

'Jenny's not here; she's gone to our grandparents with Mum and Dad. They'll be gone for a week.' Lucy, Jenny's elder sister, stood in the doorway. 'I'm going tomorrow. You can come in for a coffee if you like.'

She turned away, leaving me standing at the open doorway. I followed her, remembering to close the front door. She walked to the kitchen.

'Coffee?'

'Yes, please, milk, no sugar.'

She stood, facing away from me, looking out of the kitchen window while the kettle boiled. I perched on a stool at the table. Lucy was two years older than Jenny, a little shorter and slightly fuller of figure. She was wearing a dark blue cotton dress that just reached her knees. Her shoulders were bare, save for the two straps that held the dress up.

'Like what you see?' She said, without turning around. 'I know you're looking at my arse.' She turned to look at me.

'I'm one cup size bigger than hers, half a dress size bigger, and two inches shorter than my perfect sister.'

I looked at her eyes, the same shade as Jenny's, and at her pretty, round face. Lucy's hair just reached her shoulders.

'Well done, you didn't look straight at my tits.' Of course, as soon as she said that, I did. She was right; they were bigger than Jenny's. Lucy turned away from me again to face the window, and, yes, I did look at her rounded arse.

I can't really explain the next bit, but in my defence, I was in my teens. I had gone out hoping, no expecting, to get laid, and I was alone in a house with an attractive girl. Not the one I'd hoped to be with but.... So, I walked towards the window and stood half a pace behind her. She didn't react. I placed my hands on her waist. She still didn't react.

Now, Jenny loves to have her neck and shoulders kissed. I gambled that Lucy would like it too. I moved her hair to one side and placed the softest of kisses on the back of her neck, then worked my way along her right shoulder, back to her left, and finally returned to her neck.

I slipped first one strap and then the other away from her shoulders and moved my hands further around her waist, feeling the weight of her breasts pressing down on them. Lucy turned, placed her hands behind my neck, and drew me towards her. Our lips met, and her tongue joined mine in a tango. She knew how to kiss. I ran one hand down her back and squeezed her arse, pulling her close to me.

Lucy broke off the kiss. I thought I'd gone too far.

'Someone's enjoying this,' she said, rubbing one hand on my trousers.

'Aren't you then?' She didn't answer but placed the hand that wasn't squeezing her backside on her breast, where I could feel what appeared to be a large rivet was trying to burst through the fabric of her dress.

'You'd better be up to this.' She walked past me into the hallway and led the way upstairs. Her bedroom was next to Jenny's. She closed the curtains just as I closed the door, then lifted the blue dress over her head and discarded it on the chair. I reached out and cradled her ample tits, then bent to kiss each of her large, protruding nipples in turn.

Lucy moved backwards to the bed, lay back, and removed her knickers to reveal the neatly trimmed brown hairs. She parted her shapely legs slightly, then propped herself up on her elbows to look straight at me.

'Joining me or just here for an eyeful?'

I undressed as fast as I could and lay next to her on the bed. She raised herself onto her side and started to massage my balls gently.

'I'm better than Jenny, too. I'm better than most. You are about to find out.'

Lucy climbed on top of me and lined my cock up with her dripping pussy. She stayed in place, teasing me, then placed her hands on my chest. I lifted my hips towards her, trying to slip inside.

'No, you don't,' she said, raising herself so that I was still just inside her lips. 'I'm in charge here, you fucking wait.'

She rubbed herself back and forward, sighing and closing her eyes. I reached down and started to finger her wet slit. I could feel the juices starting to run down my shaft. Slowly, Lucy lowered herself onto me. I felt the lovely, silky, wet, and warm tunnel as it parted around me. She stilled herself again, and I felt her relax around me.

'Tits, squeeze my tits,' she said breathlessly, removing her hands from my chest. I clamped my hands on her. She leaned forward. 'Harder.'

Lucy seemed to enter another world as I massaged her soft breasts. She started to move on me, slowly at first, easing more of me inside of her with each stroke. I started to match her movements. This time, she didn't complain. Suddenly, she started to slam herself down on me, faster and faster. I lifted her, driving myself into her. Lucy started to scream.

I forced my hips upwards, lifting Lucy in the air, taking every ounce of her as my cock drove deep inside her.

'YES, YES, FUCK, YES,' she yelled as I held her in mid-air. She squirmed on me as she came, then leaned back on me as I erupted inside her.

And that's how I got here, about to blow my load over Lucy's soft tits as she starts to increase the pace and pressure of her strokes. She sensed I was close.

'Don't you dare come on my tits, not yet anyway.'

Lucy moved and engulfed me in her mouth. Her lips made a seal around my shaft, and then she sucked hard. She didn't bob her head or swirl her tongue; she just sucked and waited for me to explode in her mouth. I lasted all of ten seconds. I felt her gulp as she swallowed the load, then the suction started again as she emptied me, taking every last drop.

'Suck my tits.' She rolled onto her back, legs spread wide and arms above her head. I took as much of one breast in my mouth as I could and worked my tongue around her hard nipple. I sucked it, and Lucy started to moan and wriggle. My hand found her other tit, and I massaged it gently before taking the nipple between my fingers and squeezing it. She moaned again.

'Lift up,' I said, and she lifted her backside from the bed. I slipped my other hand under her, between her firm cheeks and between her legs, feeling the wetness of our earlier exertions. I worked my finger around her lips. She started to grind her hips back and forth. I broke off from the attention I was giving her willing breasts.

'What do you want, Lucy? Tell me.' I slipped one finger inside her, and she thrust her hips upwards. I moved to her other breast, taking as much as I could into my mouth, then sucking it hard while working my tongue around her nipple. She started to squirm, working her pussy against my fingers. I touched her puckered hole with my thumb, and it was as if 5000 volts had shot through her body.

'Touch my arse, just touch it, don't go in, argh, ah, fuck.'

She reached down and pulled on her legs.

'Now fucking pound me, hurt me, use me.'

I knelt between her legs and lined myself up with her swollen, dripping pussy, then lodged my cock just inside her lips.

'Do it, just fuck,' she lowered her legs onto my shoulders. I leaned forward, folding her and lifting her arse further from the bed. I found her tight hole, fingered it, then plunged my cock deep into her pussy. Lucy was like a wild animal. I pounded deep into her. She bucked and writhed, yelled, moaned, then screamed. I kept going, harder and faster, driving into her for all I was worth, pounding her insides. Lucy screamed again and then tightened her muscles around me, trying to make me lose control.

'I'm going to come,' I said.

'Not yet, don't you dare, fuck me harder,' she yelled.

I drove as hard as I could; my balls were slapping off her with each stroke. She bucked her hips upwards to meet me each time to make me go deeper. I must have been stretching her in every direction. Then it happened. Lucy moved her hands to under her hips, forced herself as high as she could and let me pound into her. She tightened again, and I had no choice but to fill her with stream after stream; this took her over the edge, and she screamed. Never mind the neighbours; folks in the next town would have been aware.

We've got our breath back. Lucy is facing me on the bed, one knee resting on my hip. I've got most of her right breast in my mouth, and my tongue is working around her insatiable nipple. I can feel her hand gently cradling my balls. I don't think this is over for a second.