I am a lawyer Pickle and most states are "no fault". Check for yourself with FL to be sure though. If it is no fault, as Grit said, it makes no difference what she is doing now with OM.
I know that it is probably harder for you than for me bc you and your W are still in the same home, but snooping would probably drive me to they asylum if I were doing it. I have absolutely no idea of what is going on bw W and her EA, or whatever, with OM. BC I don't ask her, don't ask SS, and don't snoop. I've heard a few things through the grapevine that would support nothing going on, but I've also heard a few things that would suggest that there is. I really have no idea. It still drives me crazy, but I just don't know what I would gain by snooping. YOu're either going to find bad news, which you have. Or your not going to find anything...which proves NOTHING.
M 43 X 38 T 13 W moves out of home 11/2010 Roller coaster from hell 2/2011-5/2012 I request divorce 5/2012 W moves home 6/2012 Good time 7/2012 - 1/2015 I leave 3/2016 process of divorce