Thanks for the advice. We talked, and everything is okay. They were "done" and were sleeping by 2, so she said that she was wondering when I was going to come to bed. She apologized and everything, so it's cool. She was embarrassed though, because my suitemate came home really drunk last night, and ended up walking in on them. If that wasn't bad enough, she was standing there talking, and they asked her to hand them the blanket, and she was like "Your underwear are on the floor! Oh my God! You are naked, like we didn't know! Everyone Lindsey is naked, she has no clothes on!" She then came into the kitchen with me, and you could hear them, and my suitemate yelled "I can hear you guys!" My roommate asked me this morning if we could hear her, and we were like "Uh, yeah..." and she was really embarrased...
I did get to bed at 4:30... and when I woke up he was gone, and he left our door unlocked...
But now we've got rules...