Not sure if I want this baby

I was so happy at first, so excited. Now my boyfriend and I just fight. He's an asshole. He is very passive agressive and then acts super nice then turns everything around on to me. I know I'm not perfect, I know I've been bitch and hormonal but it's hard to deal with everything and I do and go everywhere with him usually he always wants me there. Then I say we never do anything I want and he says I'm lying. But I actually counted the past 2 days and theres a good handful of thing I wanted to do and didnt get to (half being just spending time together and not with his friends!). He wanted to go out to a friend's house where they were having a small party and I said I wasn't up to it and I stayed home and he was fine with it. It's 2AM and he's not home. When I texted his friend they said he left with another one of his friends at 10!!! And was texting me like he was still at the original party. Is that sleezy or what??? I hate it I hate him I can't deal with all this I dont know if I could do it and he already said if we breakup then he'll make my life hell and fight for full custody because of past mental health issues I've had I'm just so scared ready of everything I don't know if I can do this...