OK, Guys, Exposure.

I don't 'know who OW is (I have only known about her 2 weeks. If I do find out,
What is the wisdom on exposing?

For my WS, I exposed to his therapist, mom, brothers family, church and church mens group. All my family knows. I have no problem with a truthful, concise exposure to anyone.

If this is a co worker (huge auto company - white collar) what do I do?
I have no problem calling HER myself. but I don't want to do a huge, random FB exposure, either.....

Thank you

Me: 48
H: 48
Married 26 , together 30
D1: 21
D2: 18
"Happily Married" until BD
4 weeks later: "Im talking to someone"
No papers filed.
Attempting 180, finding it difficult.