My brother married a couple of years ago. For the wedding I stayed in their house. Since I live thousands of miles away I would stay for a whole week.
His wife had also invited her niece Megan to stay during the days around the wedding. She was 18 years old, had braces and sparkling blue eyes. She had a lovely petite body, but big firm tits.
My brothers house wasn't that big, so his daughter slept on an airbed in his room, Megan slept in his daughters room and I.... I had to sleep on a small airbed on the ground in that very same room.
The idea didn't excite me (yet) since she was a relative and very young to me. Now my brother had a split bathroom. When I was getting ready for the night I heard Megan entering the other part. I was a little curious of her being naked, so I grabbed a hand mirror and tried to watch her through the gap underneath the door.
There she stood, undressing. My cock got rock hard and I tried to reposition the mirror for a better look, but accidentally touched the door. She looked straight in the mirror. She probably couldn't see me but I guess she was smart enough to know what was going on. She stopped undressing.
I flushed the toilet and left, pretending I was ready. I went to bed and a minute later she came into the room.
She smiled and made jokes about me sleeping on the floor, while she had a soft bed. I said it didn't bother me, but she kept on teasing: 'Here I am in a soft bed'. 'I bet you'd love to have this bed'. I said: 'It's not really fair, but we both are not so big, I bet we'll both fit in it'. I stood up and crawled next to her. We immediately started kissing. This was unreal! I was kissing this girl, with braces, not even knowing her last name.
We both wore shorts but she wore a t-shirt. As we kissed and licked each others lips I started touching her huge breasts. I pinched her nipples and she moaned softly. I put my hands in her shorts and started to finger her wet pussy. She immediately started touching my hard cock and stroked up and down.
We both wanted to fuck, but since we had no condom we decided not to. I kept fingering her, but we both started making too much noise, so we had to stop because everybody could hear us.
After we said goodbye we emailed a lot, and the emails were always stories about how this night should have had ended.