In MO adultery carries no weight in D proceedings. Not sure what state you are in, but if texts and illicit emails are no ammunition for D proceedings, not sure memberships on Ashley Madison would do much of anything.
Just my thoughts...not a lawyer, though the opinion I expressed here was one expressed by a lawyer. I also work with a guy whose wife showed up to the D proceedings with her AP. My friend "gets" to see his kids 1 weekend a month and is out maximum child support to his wife....who is currently not working and is living a lifestyle her now ex husband is supporting. And she was the wayward one who is a known party girl. She wont marry the AP because if she does her child support will be reduced. There's a special room in hell for non-repentent folks lik her.
Oh...but me texting OM IS illegal...felony harrassment charge. That info was supplied to me by a very kind but stern sheriff, whose wife cheated on him!