She is in the thick of an affair. Tell her you aren't game for being married to her if there is a 3rd person involved. Mean it and stand your ground. BE FIRM. No more flowers, begging, pleading. Just a very clear statement that while you love her and want your M, you will not be in a M where she is having an affair.
This.
Then stop talking to her about anything that doesn't directly relate to your kids.
Get a new hobby. Go out. Do cool stuff, and don't tell her about any of it.
It ain't easy... But it's EXACTLY what you need to do.
While she is in the midst of this affair, you cannot believe a word she says about anything.
She will literally make up reasons why your marriage failed. Do not listen to them.
Do not even TRY to "fix" the marriage while she is having an affair, it WILL backfire on you and you will drive yourself crazy.
