I think you are being very strong and you should be proud of yourself.
Unfortunately, I am one of the statistics in that it was me that had the affair (work colleage - still work together but will comment more on that later), I got found out by husband, was forgiven, re-started affair (thought I could get away with it - my excuse was that my H was not that bothered), got found out again. Finished affair. All forgiven, life carried on.
1 year later (and new baby) husband decided that all the time he felt anger towards the other man, it was in fact me that he felt anger towards and he didn't like me, couldn't forgive me and had to leave ... and he did leaving me with 3 children.
The other man still works in the same company, we still see each other around the office and sometimes I go out for lunch with him, just as friends (and that is honestly all it is).
We spent a lot of time together obviously and there is definitely a friendship there but nothing else (not on my part anyway).
He is still 'happily' married and I lost everything over the affair and am still paying the price today (6 years later).
H sees the children every week, takes them on holiday, etc. and has a fantastic relationship with them but it breaks my heart (if I think about it too much) that he doesn't want to be with me/love me/respect me/even 'like' me. I know I put myself in the situation that I am now in and this is the price I will pay for the rest of my life.
I still love my H, respect him, etc. but this is all too late for me now and I know I only have myself to blame.
My H does know this and says to me that he feels I will never move on emotionally until I can forgive myself for what I did. He has moved on, is now living with another woman (again, a work colleague of his but he didn't get with her until after he left me - or so he says - but lets not dwell on that).
The other man would quite happily carry on where we left off (albeit 6 years ago) but I would NEVER go that route again, even though I am no longer with my H I would not do to the other man's wife what I did to my husband - broke his heart basically.
I (nor my H) ever thought of telling the other man's wife because why would we split up their marriage just because ours was splitting (and, anyway, as far as we knew she might have known about the affair and turned a blind eye).