this happened to me last year....i love my roommate to death & have known her since i was 8...her & her b/f woke me up at 5:30 am & i had to be up at 8:00 havin sex...i was soo pissed, i ripped my alarm clock outta the walk, grabbed my pillow & comforter & slept on the couch in the living room..i do not this it is acceptable cuz i would never do it to her...however, durin the day or night, if i was up, she owuld ask me to use the room & i am 100% ok wit that cuz everyone has to get theirs..but don't ever do it when another person is in the room, even if you think they are sleepin..it's not sumin pleasant to wake up to