I can understand your feelings in finding that. In a way I think it might be good you did and that you asked him about it because affairs and affair-like behaviors flourish in secrecy. I would it's good you're encouraging him to talk with you about it and let you know if he feels a desire to check on her or contact her. Hopefully openness and honesty will discourage any negative behaviors... and if he does feel a desire to learn what she's doing perhaps he'll now feel comfortable enough to talk with you about those feelings. The real trick is being a good listener and supportive even if the information is stabbing you like a knife in the gut.
Even through I feel pretty positve about things, I also wonder if sometimes my husband might be curious about OW. I think if I had an intense relationship/A with someone I might be curious about how they are and even hope they are well. On the other hand I'd also worry about any connection stirring up old feelings or emotions.
There is no arriving, ever. It is all a continual becoming.
