I think it would be a good idea to exchange numbers. She may find evidence that you haven't found...and it might give you a better idea as to what has happened...she may have pics/emails you don't know about. Also,her WH will lie to her,try to gaslight her,etc. She may need to contact you for clarification on some things. When you call she will go into shock..and may have trouble hearing everything you have to say.
Im not saying contact should go on indefinitely,but a few calls back and forth would be appropriate.
Don't tell your WW that you're going to do...she may warn the OM,and he will tell his wife that you're running around accusing everyone your wife knows of having an affair with you,etc.
..that feeling you get in your stomach, when you heart's broken. It's like all the butterflies just died.
Also,in your very first post you classified the A as an EA. There was kissing involved,so many people would consider that a PA. So when you talk to his BW,make sure to tell her it was emotional with some physical.
T/j: Stillsad- telling the OBS isn't "getting blood on your hands" or "stooping to their level", it's creating a place of truth and honesty. Bringing the truth to light. No matter what we as the BS are not "homewreckers" or "hurting" anyone- the WS did that all on their own.
Me- BW, 30
Him- fWh, 36
Mostly R'd, minus a few scars...bought a house and got a puppy...And baby makes 3! She arrived August 2013
Telling is the right thing to do..it doesn't make you a homewrecker...you're giving the truth to an innocent man about his life..and his marriage. The WS's are the homewreckers.