Very annoying, i used to share a house and shared a room with my mate, due to the shifts i worked sometimes i just wanted to go to bed early but he would come in the room banging around and wake me up
I would just tell this guy that you want to be on your own after a long day at work and just want to enjoy some quality time to yourself, if he's half decent then he should understand, if not lock your door he will get the message eventually

__________________
Yes and only if my own true love was waiting,
And i could hear her heart a softly pounding,
Yes and only if she was lying by me!
Then i would lie in my bed once again.