I'm in a sticky situation..

okay I realize I'm stuck in a very unhealthy relationship I just can't bring myself to actually leave it. I've tried multiple times and he's cried and begged for me back but things just always go back to being the same he talks to a girl, I find out about it , he talks down to me hurts my feelings, and he wants to know why I'm always stressed.. I have a very stressful life as it is and having an asshole of a boyfriend doesn't make things better pardon my French. he wants to get mad because I want to spend time with my dad on the weekends and I literally see him all the time I tell him that I need me time and then he wants to get upset but yet he can have guy time whenever he pleases. and like the other morning he had stayed the night and I had to wake him up so he would leave and he wants to get mad at me saying I was trying to push him out of the house when in reality I'm just trying to get him up so you won't be late getting home. I honestly don't know what to do anymore I'm so stressed and just unhappy and he's aware of it. he keeps saying that he's going to change and things are going to be better for us but I honestly don't know if that's even what I want. but yet I'm the bad guy.