Wow feels weird

I really need a friend right now. I’m 18. I’m dealing with a guy who is 29 with 6 kids. I can’t believe I fell in love with this person honestly. He’s physically , mentally abusive ..He has cheated & I know I was dumb to stay he comes with a lot of baggaged.. we argue WAY too much. I’m always doing whatever he ask of me. The other day he kept telling me he knows I’m cheating of him ( he know I would never ) so had me wondering. He keeps making me feel uncomfortable by just leaving for work in the morning and not telling me he’s gone like he use to do.. now I have no family or anyone house I can go to. ANY ADVICE? He won’t change either btw & please no mean comments I know I probably should’ve been left .. but everyone knows about that love shit. Next month makes 1 year. I’m so confused

... what should I do?????