This happened last night. We stayed all in a friend's house to watch a match that would be broadcasted at midnight, and when we decided to go to sleep, we decided to all share the king sized bed since there was enough room and there were no other beds and the couch was very small.

Honestly with this girl there is some context story, but summarizing as much as possible: My friend and I, we were both flirting with her, everyone knew they were talking, no one knew that we would talk 24/7. She'd imply that she preferred me but nothing happened since I wanted to know first what was going on between my friend and her as an act of respect for him. He wanted to get serious with her, I backed down and never talked to her in a way other than just friends anymore, at least not verbally...

Back to "the present", us three sharing a bed, she was sleeping in between my friend and I. I can't deny that before falling asleep, I fantasized a little (don't blame me for getting horny late at night lol) but I tried to fall asleep looking the other way to avoid misunderstandings but I probably got a boner while being asleep thanks to all the fantasizing. Next thing I know, I wake up in the middle of the night to me sort of "big spooning" her and brushing my boner against her ass. Eventhough it felt amazing, wit my last bit of clear mind, I backed my hips to stop it, only to feel her arm five seconds later on my thigh pulling me towards her again. I then could not help myself, it felt so hot yet I felt sorry with my friend. I fell asleep again and didn't go further or anything but I'm pretty sure I will think about it when I get horny, it was so hot also due to the fact that my friend was right next to us, clueless about what we were doing.