All I can say from my own experience, is that contacting OW just used to leave me feeling worse afterwards. What I wanted from her was an acknowledgement that what she was doing was bad and she was sorry - well that wasn't going to happen - she knew exactly what she was doing and had no reason responding to me. I just used to end up feeling stupid and pathetic that I had made it obvious she was 'getting' to me.
I do appreciate how compulsive the urge to make contact is but please try not to - for your sake.
Saffie me 46 H 46 M in 1986 D20,D18,S16,D13 H's A 01/05 to 07/06 H recommitted to M 07/06 renewed vows 09/06 Going from strength to strength