One more: having coffee with him means nothing, other than that you enjoy his company more than none and that you enjoy coffee. Have coffee with him if you want to.
Making up a rule that you won't have coffee with him if he talks to the OW seems really manipulative and petty, at least to me. I don't believe in all the kibbles stuff, and I think your asking what is the right thing to do in a situation this irrelevant smacks of strategizing.
Adinva 51, S20, S18 M24 total 6/15/11-12/1/12 From IDLY to H moving out 9/15/15-3/7/17 From negotiating SA to final D at age 50 5/8/17-now: New relationship with an old friend __ Happiness is a warm puppy.