Sarah had told me once, a long time ago, that she had a fantasy of being surprised in the middle of the night, so I put my plan together without telling her.

So, the biggest risk I ever took was going to her house one night, as I knew they didn’t lock the back door and that her husband was a very deep sleeper.

I snuck in very quietly, crept through to the hall and was hoping to catch them fucking. I listened outside their bedroom door and peeked through the gap where it was slightly open. My heart was almost pounding out of my chest, and I was shaking like a leaf.

I could see inside the room quite well as the streetlight outside shone through the curtains, and I could see they were both fast asleep, so I took my cock out and went into the room. I stood on her side of the bed and started rubbing myself, looking at them.

I then knelt beside the bed and slid my hand under the blankets and let it warm up a little before ever so slowly sliding it onto her body, rubbing up her arm across her shoulder, then down over her yummy tits, then I went across her stomach and down to her legs, then back up to her pussy.

Next, I started to very gently stimulate her pussy lips and clit, and when I felt her juices start to flow, I began to finger her pussy and get her wetter. I started just inserting one finger at first, then a few more as I rubbed her clit with my thumb.

When she stirred slightly, she thought it was him and spread her legs a little to allow better access. She started rubbing her nipples and pulling them gently, and let out a soft moan of pleasure, which almost made me cum right there and then. She slowly moved one of her own hands down and started to rub herself along with me, and inserted some of her fingers beside mine.

After a little while, she finally started to open her eyes with the sexiest look of lust in her eyes, then rolled her head over to look at her husband.

It took her a few seconds to realise he was still fast asleep, her hand went back up my arm, and then she realised.

She shot a look in my direction with such pure lust, knowing it was someone else doing it to her, and she almost cum straight away.

I felt her pussy get so very wet with the knowledge of what was happening and that it was me, her lover, doing it to her, all while she lay right next to her sleeping husband.

She looked at me so intensely with lust in her eyes and was almost crying in joy at the feelings she had going through her whole body.

I very slowly pulled back the blankets a little and went in underneath, and she let me lick and finger her pussy, and clit, then suck her yummy, hard nipples, while he was still fast asleep.

After she had cum so fantastically, for which she had to pull a pillow over her face to muffle her moans of pleasure, I sucked her juices off my fingers while I stood up; I wanked over her staring straight into her eyes until I cum several jets over both of them.

She let out a small squeal of delight as the last few went over her tits and belly. I told her how yummy she looked covered in my cum, I kissed her gently on the lips, then turned and quietly left.

When I went there the next day, she was waiting for me in my favourite lace teddy suit, which she knew I loved. She wrapped her arms around me and cried in delight and told me how much she had loved the surprise. I told her she knew me well enough to know that I would do anything to make her pussy feel good.

She replied by saying that I most certainly did that to her last night, and how she even found it so horny, slowly rubbing my cum into her husband's skin that had gone onto him. By the time I left that day, she had me coat her inside and out.