You go girl!
The nasty, gross specimen of a man I had the misfortune to be once married to had an affair too.
When I found out about it, I drunkenly put something on fb, after I had sent messages to any member of her and her husbands family I could find. My best friend privately replied asking what it was all about (as a so called bf I'd of been on the phone and round hers like a shot)
I told her I found out he was having an affair.
There was no reply, ever,
The shit bag was actually having an affair with someone else, but she thought I'd found out about her and him!!!
I got rid of the two low life scumbags sooner than you could say 'Karma is wonderful thing'
I decided though not to ever say anything to her partner, wet drip he was too, I figured if she was so unhappy in her own relationship that she would of scooped so low as to want that vile cretin and do that to me, I would rather leave her there in that desperate unhappiness.
You will survive, you will thrive. So will your children, because of your strength.
They made their bed, let them lie in it, whilst you show them you are by miles and miles that you are so much a better person that they could ever be.
Well done, take care, ride the storm with strength, composure and true freedom.