My friend has a guy living with her they were in a relationship and broke up he left to a hotel so we changed the locks but he has a ton of stuff in there she has not told him yet but what does she have to do to keep him out he's lived there about a month and a half

Real tricky, since she can't legally just change the locks, if he has not moved out.

She needs to talk to him, have him come and get his stuff.