When I say, "I've done nothing" I meant as far as my behavior after the BD. He has no reason to avoid me, to my mind; I've been nothing but friendly and polite. I admit and have owned up to my part in the break up of our R, that's a given.
But you're right on the telling of OW his naughtiness, Mozza, I wasn't thinking of that. I'm pretty sure he blocked me just before/shortly after BD, though, so it's a moot point.
You're also right, Bug. Thanks.
I love how I get clarity here! I just hate finding out how deep the rabbit hole goes as far as the stuff that was done/said behind my back and how frequently he lied.
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
I'm pretty sure he blocked me just before/shortly after BD, though, so it's a moot point. 
