Man! Since my ex and I broke up, things have been going decently well. I am enjoying my life in ways I never allowed myself to while we were dating... and I'm making a ton of new friends. In so many ways I'm really really happy were broken up, because it was meant to happen eventually, and I'm free to move on.
But.... every now and then (like now), I have relapses. Like, I want to just call him up and be like "lets get back together".
I went to Japan, he befriended a new girl, got close with her, I came back, he was emotionally distant with me, but close with this new girl, so we broke up, and he started dating her.
Half of the time I spend thinking about him is in fact about THEM, he and his new girl. I have no idea where they're at to be honest, though I am sure they're in their honeymoon phase of a relationship. I can't tell if shes some sort of weird rebound, or if he misses me, or WHAT, and thats the part thats killing me.
When we broke up, he insisted he would not date this girl, he cried about us breaking up, but at the same time, he did not want to get back together. After some NC on my end, he started contacting me, sent me a naked picture while dating this new girl and ... well since then has been cut out contact wise but...
I need advice I guess!
Whats going on with him? Is he missing me? Am I moving on if I'm thinking like this - happy most of the time, but with relapses in between? Any insight would be very welcome.

Thank you