Still struggling to get over ex

No hate, I’ve been working hard on letting go. Unfriended him and actually haven’t thought about him too much, but the thought of him does come around. We broke up couple years ago, been in rebound since, so just now healing those old wounds. Part of my wants another shot with him, part of me knows he had/has a gf, and maybe it’s the holidays getting to me. I do want the perfect man, but how can I let go of my ex