I'm so sorry you are going through this. We all have stuff that we are not proud of. You are a good person for pressing through all that you have been through, and for trying to work on your marriage.
Something a lot of the members of our community say, as well as Michele herself, is not to take to heart the words your spouse is saying during this time.
Since your wife has her own focus and determination, her own version of the what has gone on, trying to persuade her otherwise is going to be counterproductive. (What you resist, persists.)
Right now, focus on being your best self and doing things that make you happy. (What you focus on expands.)
We are here to support you, and help you brainstorm solutions for your marriage.
sg Love is PATIENT, love is KIND, LOVE never fails / DB since 2001