What if she says she's not talking to him? How would you know?
How about, saying yes if you want to go and no if you don't.
If you go, show your W APOAFWL. Put on your best dress and smell good.
If you say no, say, "No, I'm not in a place to go to dinner with you at this time". That's
Infidelity is the giving away of secrets being betrayed. It's not only about sex. If you feel betrayed, then your W committed infidelity. Are you comfortable with her friendship with this OM? If not, then it must stop for you and her to fix y'all M.
Your explanation about their R, sounds like you are trying to convince yourself that what's she's doing is not that bad. If you have to explain away a person's actions then something is wrong.
Joejoe
M:37 W:37 T:11 M:10 S17, S13, S10, S4 BD:06/28/17 OM confirmed 07/20/17 Recon the M 10/29/17 Working hard:2gether
Onward and forward
This process is not a sprint it's a marathon! Patience, Patience, Patience.