I am trying to end it with boyfriend of 6month. We dated before that for a while. He keeps crying and teling?

me he loves me, however he still has not told his mother we are dating and they own a business together. His mother from previous dating does not like me and tried to end our relationship then. He constantly tellsme he wants to marry me in the soon future. The problem is that he won't tell his mom were dating so we have to sneak around and make sure we go places where she is not. I think this is immature and ridiculous. I thought I cared for him deeply but the constant sneaking around and games have just left a bad taste in my mouth as far as the relationship is concerned. He wont even say my name around his mother and has told her a different name. To me that is just someone that is a pure liar and forsight for what is to come.I have tried dumping this guy but he keeps showing up at my door crying and I feel sorry for him I think now I am afraid that he may do something out of anger. He beat the crap more than once out of exes child ?How do I end it without getting physically hu