I think we need to be just friendly enough that the door is open a crack. Friendly doesn't mean best friends. I think the 80% rule is smart, you know about that already? Respond to him in a positive and friendly way, don't initiate, and be 80% as warm to him as he is to you. If he starts to have second thoughts he will then feel more comfortable coming to you rather than if you are cold and distant and have made a line in the sand that he shouldn't bother you unless he wants a relationship.
This is wonderful and so helpful. Thank you so much for your thoughts, because this gives me such peace of mind. I love it.
Big hugs!
ME: 38 BF: 40 T: 10y, no kids, no M (by choice) BD: 7/14/14, BF admits to PA, wants out, lies about new R. 10/1/14: I move out, BF lies about move in with OW 12/4/14: OW confronted, reveals all the lies