I also agree with the advice above. I think you should talk to your bf about it though -but be sure to emphasis what you're feeling about it, rather than accusing him of anything (not that you seem to be) since the reason he stays there probably is just plain convenience. Guys sometimes don't think about how their partners would feel about certain actions - not because they don't care, but because it just hasn't occured to them - so talk to him about it I reckon.