<human>: Can you provide a brief overview of the text?

So here's the deal, my actual roommate is abroad and her room is being rented by a sub-leaser who is a friend of a friend. He is a fairly normal dude, but I recently discovered he doesn't sleep in his room. He waits until after I have gone to my room for the night and then brings his comforter and pillow out to the couch and sleeps with the TV on. He must have the TV timer on, because I have never noticed it playing when I get up earlier. I know he falls asleep with it on though because a few times when I have gotten up in the middle of the night (to get water or go pee) I had to turn it off. If the utilities weren't included in the rent I would be annoyed about paying a higher electric bill. Still the environmentalist in me is a mildly annoyed about the waste of electricity. The couch is mine I bought it, its a nice couch - I don't care if a friend crashes on it every now and then, but having someone sleep on it all summer can't be good for its health. I don't think I have a legitimate reason to ask him not to do it, as he gets up early and puts everything back to normal before he goes to work. I just find it weird - its common space, why doesn't he just sleep in his room that has a bed and a door? Am I just being anal or should I say something about it? Should I suggest he at least puts a sheet down on it? What would you do?
<bot>: sub-leaser doesn't sleep in his room and consistently falls asleep on the couch with the TV on. I find this strange, but not sure if I should say anything or just ignore it.