Craig - I'm proud of how you've grown in these last few weeks. As to your question, I have asked for forgiveness as COG has. I also didn't make it a special event. I would wait for W to open the conversation or indicate she wanted to discuss the M, and I subtly would acknowledge my failings. COG is so right - you can say it, but it must be said in a way that does not require a response from her. Not a question, but a statement of fact. No pressure. No self-serving statements.
1 Cor 13:5 - Love (God's love in us) does not insist on its own rights or its own way, for it is not self-seeking;.... (Amplified Bible)
As long as what you say is not self-seeking - it can't be wrong.
Me - 43 and She -36. No kids. Married 7 yrs - Together 14 yrs