You've been avoiding confronting your wife for 4 months now. What are you afraid of?
"Casually mentioning" your wife's EA is not a plan. Either confront her -- with evidence -- or move on. This little temperature-checks about her and her OM are greatly devaluing you in her eyes each time you do it, and her wayward behavior is slowly eroding what's left of your self-esteem.
Hey Starsky, thanks for the response. I have some evidence that they communicate at work off and on, but nothing over the past 2 months. I basically have moved on, but thought I would throw the question out there given that we have not discussed it since December.
My sense is that the EA part is over, but that they still interact. Will be the last time that he is mentioned.