SmileysPerson: He is MARRIED. Full stop.

If the marriage is over, then there is a proper and dignified way to handle things so that he doesn't don the mask of Creepy Married Guy Who Is In Anguish Over His Existence Of Not Having The Vows Upheld Who Is Now Covertly Seeking Someone External To The Marriage To Give Him An Excuse To Leave The Marriage.

Or something like that.

In most situations here, I don't think that flirtations and getting a healthy dose of validation for your battered egos is wrong. In Thinker's case, the terms of the R are still being explored and established.

First things first.

Just because Mrs. Thinker had an EA doesn't give Thinker the right to dabble around.

Thinker: Don't lower yourself. You're too good for that.

Lucky