During a summer, I had my girlfriend at the time come down with her cousin and stay with me. We were long distance and they had come down for warped tour back in the day.

Their first night with me, her cousin had been set up on the floor next to our bed in my room. Since it had been some time since we had last seen each other. Her and I started fooling around and trying to be as quiet as we could be. As we really got into it, I had her in doggy style and we were completely naked, fucking against the window, casting our shadow over her cousin sleeping. Pulling her hair and smacking her ass, grabbing her by the hips and driving myself deep into her, she moaned. Suddenly her cousin sat up and looked right at us, me deep inside my girlfriend from behind with one hand holding her hair and the other grabbing her ass. We froze and said "hey Amanda...."

"Hi" half asleep, she laughed and went back to bed.

So we laughed and continued for awhile longer. Ended with my splattering her tits with a huge load as it turned me on to be watched and having her hot cousin, tits out after finding us having sex, laying there, sleeping.