Has your opinion about the chances of a marriage surviving through infidelity changed from what you may have thought before it happened to you? Possibly went from "no way", to "maybe"?

I thought there was some chance but my W believes she is still looking to "is there someone better than." She says that's one reason it happened. I believed there was some chance of reconciling but presently I am detaching from any possibility because she is not receptive at this time. Which leaves me feeling very low from time to time. But the more I pull away from pursuing her, the less concern I have for what she will or will not do. It is her issue, not mine.