You need to talk to your room-mate. Point Blank. The fact that he even thinks its okay to have sex while you are in the room means you’ve been overly nice to his tendencies. While, yes he is paying for half of the room and therefore should be able to have lady friends over, your room is not a bed & breakfast. With a room-mate who likes to erhum…“scratch the itch often” I know that it can get really annoying.