My roommate had some guy from home come and visit, and they've been in bed since 10...

I'm so tired, I've been up since 6, and have to get up at 6 or so tomorrow... I've been in our kitchen since 10, and finally snuck out to the computer... This never happens, she doesn't bring home guys or anything, but does this happen to anyone else? I couldn't even take a shower tonight because all my clothes are by the bed... I would have went to sleep in the kitchen but we have bunk beds, and they were up top, and my alarm clock was below it, and if I didn't have it I know I would oversleep... I didn't ask her if I could sleep in the room, but I figured I'd be awkward if I was sleeping while they were doing stuff...
I was planning on staying awake the whole night, because it might not even be worth it to go to bed, but they are quieter now, so I think I'll try to sneak in bed and set the alarm...
Any suggestions if this ever happens again... sleep in the bathtub or something.