The thing is that he wants the best of both worlds...that is why he hasnt broke up with u yet. he wants the luxury of having a bachelor pad and dating and screwing girls without having u bitch at him for it. but he wants u there just in case of those lonely moments he needs someone to hold when he is lonely. u r his plan B. HIs safety net. DOnt be his plan B....u love him, he doesnt love u...he is only using u for his selfish reasons