Starsky, I did see that. I didn't respond for a couple reasons:
1) I am not that sure there was "infidelity" on his part. He went out with that woman a few times but I can't be sure of the nature of their relationship. Obviously I am not comfortable with it but who am I to talk.
2) I'm not seeing that I'm in any position to make demands on him about mutual transparency. We just aren't in that space yet and I feel like it would be too much, too soon.
I guess there were only 2 reasons ;-)
You have both had inappropriate contact with other people outside of the relationship, and you are both struggling with TRUST. The best way to attack that is with mutual transparency.