I'm sorry to hear about the lingering anger concerning your wife's affair.
Does your wife admit that her friendship was an affair? That she destroyed you and your marriage? Is your wife remorseful? How has her behavior changed? Is she in IC to fix herself so this does not repeat?
Are you in IC?
As noted previously, one of the consequences of giving her the benefit of the doubt and sweeping the affair under the rug is the BS's anger (and ongoing distrust).
Your wife should read: NOT JUST FRIENDS by Shirley Glass.... and the book:
Help Your Spouse Heal From Your Affair by MacDonald.
Why? Because it's important that your wife acknowledges that she had an affair (not just a friendship). She will then understand that her behavior has hurt you, damaged your marriage - and requires her to fix herself or your marriage will fail. It's not enough for her to hear it from you ...she needs to read the books and go to IC.
Your colleagues ethical obligation to you pales in comparison to your wife's moral failure. To a large extent you processed her affair as if she was an innocent victim and the OM is a predator. Your rationalization is common (we all think we married a saint).
I think you still have a lot of anger at your wife for her betrayal of her vows (and with good reason) for not protecting her marriage, her kids and you vs her 'friendship'.
Plus you may be angry at yourself because you're continually rethinking the evidence (and wondering if you've been cuckolded).
Innocent woman don't have secret relationships, take a vacation with other men, or then lie/hide about who's on the plane/trip - and no man travels to a resort without a room reservation.
You can't forgive or have closure because you don't have all the facts. Give her a polygraph test.
[This message edited by Robert22205https at 7:40 AM, October 3rd (Wednesday)]