I am still battling with that issue myself, Aud. I think I have come to the conclusion that it is up to my H to win back my trust, if he chooses, and to make the right choices. He is not a child, and he knows right from wrong. All I can do now, is be the best me, and if he chooses something or someone else, then I will move on without him. It will be his loss. There are no more chances for him, unfortunately, since we have been M for 21 years, and I have reached the point in my life when enough is enough.
That is the problem with habitual liars, and serial cheaters - when do they stop? When it is a repetitive thing, how do you know they will change their behaviour in the future? The simple answer is .... you don't. The first time they lied and/or cheated, and you forgave them, you thought that they would've learned, but you found out they didn't.
I like a lot of Dr. Phil's advice, especially on M. Here is one link where I found a lot of good info:
I always remember this part: "Remember, the best predictor of future behavior is past behavior."
Me:57 H:52 M:28 Got another lawyer last year and filed. D35,S/D twins28,D22 EA4/04 End? Who knows? "Life is like a mirror. Smile at it and it smiles back at you." — Peace Pilgrim