Exposure will push them closer yes... but it will also force them to BICKER more...
Look at two people having an affair... Shove them in a closet.. YES they are CLOSER, but do you think they arne't gonna start fighting after a while in there?
They will... Being close is fun for a while, but being the town runaround wife won't sit with her well long term.. and she will see the guy she's running around with and lose respect for him... You dont' want to win HER over, you want to win the COMMUNITY over... do that and she will return.. Its the only way for her to get her reputation back...
She will be angry with you for exposing... Children don't like being ratted out either...
And yes I got the sarcasm of the "I'm rubber and you're glue..." but she may not.. Its best to just talk like an adult so she gets the idea that you won't tolerate childish remarks...
I find sarcasm doesn't sink in well with wayward spouses... talking plain and simple like an adult hits home much better