I'm at a loss.

I’ve been dating a MM for about 3 months now. At first it started out as a one night stand. We work together and everyone from work went out to a bar. Needless to say the night ended with us having sex in the back of his car. To be completely honest both of us were drunk and I do not remember having sex with him in every detail.

He has been up front with me saying that he and his W thought about divorce before, but his family talked him out of it. She has even said that she wanted a divorce via text which I saw. So I know that he did not lie about that. Our relationship is more than just sexual; we do things together ie. Go to the gym, running, basically anything involved with being active and getting in shape.

He has helped me in many ways (w/out him being aware of it). I used to drink a lot, but I do not feel the need to drink with him. I also smoke (trying to quit), when I am with him I do not feel the need nor do I want to smoke. I know that what we are doing is wrong and immoral, but I cannot stay away from him.

I have broken it off numerous times, but always seem to be back in his arms. He doesn’t feed me a line of crap to get me back, we just seem to come together like a magnet to metal. I am truly falling for him, yet I know that this relationship will most likely end badly. I would like someone else’s opinion on this matter.

Do I stay with him or do I break it off for good. And if I decide to do that, HOW do I and actually stick to my guns? Cause it almost seems impossible.