I was working in london for two weeks so I decided to stop at my aunts (dads cousin) apartment as she was going to be on holiday and needed a house sitter. She's single, very pretty and only 2 years older than myself, I'm 30,male . When I got there on the sunday she showed me around and told me where everything was. She left that night for her holiday. For the first few nights I slept in the spare bedroom, then in the middle of the week curiosity got the better of me and I decided to have a rummage through her wardrobes and underwear drawers. Turns out she was quite an adventurous girl, I found her small collection of vibrators. This was quite exciting. I took my clothes off and decided to put her bra and french knickers on, I'd always found it kinky to wear womens underwear. I got into her bed and rubbed one of her small vibrators over my dick, then over my ass then slightly pushed it in. I then stroked my hard dick up and down until i orgasmed into her knickers and fell asleep. I had to wash her underwear in the morning. I did this for the next 3 nights. It was. 4am saturday morning and I was in her bed. still wearing her underwear asleep, her bedroom door opened and she saw me in her bed, the vibrator on her table, I woke up, embarrassed. She looked at me and smiled and said "have you been fucking women in my bed?" I still had her bra and underwear on. I was under the covers so she couldn't see. I told her I was sorry. "It doesn't matter, its been a while since my bedroom has seen any action" she replied... Then she asked "do u mind if I get into bed I'm shattered" I told her "that was fine, I'll get up" at which point she said don't worry just stay. She started to undress and had completely stripped naked, with her back to me, I was so aroused by this, I asked her if she was going to put something more comfortable on, she replied "you can't get more comfortable than this" she closed the door and the room went dark, she turned on the bed side lamp, and told me to move over as I was on her side. I did, at this point I'd manage to take her underwear off but still had her bra on. She got into bed, as she did she noticed me wearing her bra. She looked at me and smiled, I didn't know what to say, as. I was about to say I'm sorry she put her finger on my lips and said "shhhh". She pulled the covers off and saw my hard dick and then she saw her underwear with my cum in them. She said "you like to cum in my clothes, would you like to cum in me?". I didn't say anything I just climbed on top of her and rubbed my dick over her pussy, she was wet and ready for me straight away, I slid it in and fucked her passionately until I came in her. We've been fucking for two years, whenever we get the chance. We both know we can't go on doing this...