Help me with my slick talking cheating husband....?

So my husband is cheating on me. I know all about it, his sister knows the woman and she basically confirmed it. He calls her all the time and even in the middle of the night. Text messages are rampant. This woman is a downgrade from me and the neighborhood knows her as a tramp. I can’t understand it and it hurts like hell, but my husband is real slick and usually weasels his way out of prior infidelities. He’s almost a pathological liar. He gets mad if I question him and reeks of the typical signs of a cheating husband. He has no idea that I know. I once told him that whatever he had going on he had to stop or he’d lose his wife and family, so he stopped for a minute, and I was beyond hurt when he started up again. The problem is not only does my marriage prove to be a sham, but I’ll be financially screwed if we split. I’d have to move back with my mom who lives in a bad area. The schools aren’t good for my baby. I’d be 40 miles from my job. CONT BELOW