AIO My fiance of 10 years won’t let me see a chiropractor. Says I’m cheating.

Me and my fiance have been together 10 years. He’s always been verbally abusive and I kind of just pushed it off to the side. As I’ve gotten older these things get to me more and I keep feeling like I’m wasting my time. I recently started seeing a chiropractor and didn’t tell him because when I had mentioned going before, he claimed he can help me and another man shouldn’t touch me. Now I’ve been going because I have excruciating pain. Since I’ve been going , all my pain is nearly gone. Me and my fiance have been arguing lately and I’ve brought it up several times that I am unhappy and I think we should separate. He’ll start crying and lure me back. Now, I’m to the point where I told him he either he cuts it out or I’m done. Should I leave?