I agree with the comments about ex NG. It is too easy to listen to friends who may tell us what we want to hear and build up a fantasy of him. But the reality is he jumped ship and straight into a new R. And presumably he's pretty happy there just now as he isn't doing anything to change that.
As for you - I would firmly leave him by the wayside and quash any of those wistful fantasies that may develop...drive on by..
Hope you and your D have a lovely birthday tomorrow xx
T 13 M 7 Me 48 H 46 SS 15 BD 7.14 PA D final 5.16 (H filed)
We receive & we lose, and must try to achieve gratitude & embrace with whole hearts whatever of life that remains after the losses - Dubus