Please let him go. I’m in a similar situation, been with my ex just over a year, it’s made me ill. The lies, deceit, bullshit & promises are never ending. I’ve kicked him out & he’s now in a ymca. I’ve been so strong but on Friday he sent me a bouquet of flowers & asked to take me out for dinner as he’s now stopped smoking crack, so like an idiot I fall for it only to find out he smoked crack the day before & on the day we went for dinner. When I challenged him he turns the tables saying I’m nasty, im ungrateful & he’s telling the truth. The sad thing is they believe their own bulllshit & lies. For your own sanity & health get out while you can