You are strong. You’ve definitely got this!
He sounds dreadful.
Please don’t let him off the hook by directing your anger towards her. I’m sorry if it’s upsetting but he was most likely looking for an affair. It if wasn’t her it would have been another woman. He’s the problem to focus on.
That he went about seeking an affair while you were putting effort into getting your relationship on track is contemptuous. It’s twisted that he was able to keep a straight face in that process knowing what he was up to. I hope he wasn’t getting a kick out of the hidden humiliation. Any decent person would be overwhelmed by guilt and that’s why they would confess?
It’s not ok that you’ve been broken at all never mind several times. Please, for the sake of your health and well-being, don’t learn to put up with his drama.
My best friend was in a bad relationship - the worst. She came to think of her ability to put up with more and more as a sort of strength. And it was in a way. But it meant that she endured more, and her children witnessed more, before she finally left. Your relationship doesn’t sound in the same category, but if you need your strength to survive your relationship, rather than getting strength from it, is it time to get out?
He is another one but you don’t have to be another woman who lets her husband away with it with the same old: I feel sorry for her… he’s just another silly billy who’s had his head turned… it’s because she’s a man stealer… he’s shown he’s sorry by spending a few days in the doghouse.. oh, he cheated again…
You deserve more from life.