Roiste is right. THAT was prob the toughest period for me. When I "knew" something was going on, but she would never admit it or be honest with me (they never do).
So, I felt I had to play this game of doing nothing and assuming everything's ok. But when a text would come in, phone would ring or she left unexpectedly and didn't return until late, I died a little on the inside.
Even with the BD and her eventually admitting to the affair, that wasn't as bad as knowing and feeling constantly lied to.
You'll get through this and whatever else is ahead of you. Keep your PMA and GAL activities. Whether she is or isn't, you'll need them throughout your journey.
M-33 W-33 S-11, S-8 M-11, T-14 BD - 12/26, Divorce Filing and admits to affair (her) 4/18 I moved out 5/23