I never knew she felt like that
It all started a couple of days ago when I was at a friends, we'll call him Brian. He had me and a couple of other people over just to hang out. Well me and one of my other friends Mike (not his real name) ended up staying there overnight.
Well Brian and Mike fell asleep at about 2:00a.m. and I wasn't even tired so I stayed up later playing video games and watching TV. Brians younger sister came into the room and wanted to play too and I didn't care so we played for a while. I got bored and decided to try and fix their computer that was in the same room and hadn't been working. Just to say I had fantasized about her and this is when it all came true.
I was under the desk with a perfect view of her on the couch, she was laying on everything but her face. To my surprise I saw her moving around under the blanket down in that region. This got me wondering what she was doing. So I pretended to quit on the computer and sat in a chair next to it and could now see everything, her eyes closed her mouth open and she was clearly playing with herself. I just said 'you having fun there' and she froze, opened her eyes and looked at me with a blank face. She tried to deny everything and even moved the covers to show she was wearing clothes but you could easily see that she was wet through her pyjama bottoms.
I just laughed and said it was ok and that I had actually always wanted this to happen. She said that it was me and her being there alone that got her in the mood. I asked her if she wanted me to finish her off and she sat there for a minute and said yes. She took off her top and bottoms and told me only if I took off my clothes too. Which I didn't have a problem with but her parent's room was right there so I told her we had to go to her room. She quickly jumped up and ran up stairs as I followed. I took one hand and caressed her breast and the other paying attention to her pussy. She took her hand and started to rub my cock which almost instantly set me off. We did this for about ten minutes when she started to breathe heavier and moaned softly. She said she was going to cum and not even ten seconds later she did. I could feel her pussy contracting and I was done. I shot five or six shots of cum all over her and her bed. We just lay there for a couple of minutes.
Then we cleaned up and I went downstairs to sleep (at this point I was worn out). When I went to the bathroom there was a pair of her panties on the floor along with her bikini bottoms. I quickly grabbed them then went downstairs and jacked off with them and came in the crotch of the bikini so my cum would be touching her pussy next time she swam in their pool (the next day). When we were in the pool I told her what I did and that led onto more things but that's another story.