I post in newcomers but read here from time to time. My H has been in EA w OW from work for over a year now (maybe 1 1/2yrs). We have been S for 5 months now.
All I can say is that an EA is a fantasy-based R (at least in part) that until it is played-out (become reality-based) may continue. My H, I believe, is infatuated w OW who is recently D.
I would advise you to look at your part in the breakdown of your M & start (if you haven't already) doing 180s on these things.
You can't control your spouse or their decisions. You have to decide your own boundaries too. If it becomes a PA is this a deal breaker for you? It is for me- definitely.
Try to GAL for your own sanity and survival. The future is unknown for all of us here, so we can only move forward acting as if & living our lives for ourselves (& children).
It isn't easy. I've been M for 17 years & thought we had a happy M. So, this absolutely shocked me. Sounds like it did you too.
Hang in there and good luck!
M- 18 T-21 S-14,11 & 10 BD 6-18-2012 (OW-EA) H moved out 11-3-2012 10-5-13 Me- I want a divorce. I want to move on w my life. 11-25-13 Jointly filed.