What I mean by that is similar to the cycle T2 spoke of. He gets depressed or grumpy or whatever and starts manufacturing reasons that it is my fault somehow and grew a BIG FAT resentment that led to him cheating AT me.

Now he feels guilty, and that is uncomfortable so I worry that he will find yet more ways to make that "my fault", leading to more resentments...and back around the circle again.

That is my fear, but I think T2 did a better job of wording it.