I hate him

I hate him for making me regret this baby, I hate myself for regretting this baby, we decided together to have this baby, we’ve been together 6 years and already have one child, now he says he doesn’t want to be with me anymore but isn’t going to leave. What am I supposed to do with that? I’m in no position to leave him, I can’t support myself let alone two kids. Ive been told to act like everything is okay, like it’s not killing me. So I’m supposed to see him everyday when I know he doesn’t want to be here. I was so excited for this baby and now Idk if I can do it alone. I just don’t know what to do.