Op you should get some payback but more importantly leave him. He’s clearly not over her and the fact that she’s the one who ended things probably made him want her more.

I had an ex with who I was perfect.I now realize it wasn’t real since the beginning. i wasn’t romantic or nice because I loved her but simply because she was my gf. I knew how to be a good bf & that’s it. I realized i didn’t like her that way when I finally met someone for who I had real feelings for the first time in years.

At least I ended things there when I realized I didn’t feel that way.A lot of other trash guys wait for them to have another girl before ending things or try to see both.

But your bf knows he still loves her obviously and he stays with you wasting your time, he’s an asshole who’s not worth it in my book.

If she hadn’t refuse to go to the wedding(probably because her bf or even better she didn’t want to,cuz normally you go with someone with who you’re at least a little serious)

he would have gone with her without ever telling you shit and the reasons he gave you were garbage .He may treat you nicely in general but that shows how little respect he has of you.

Also it’s normal he would never get over her if he stayed in contact with her which he pathetically does in hopes of getting her back one day

Do yourself a favour op,get out of there,dump his ass,take care of yourself and wait for a real man