He committed to someone he told me not to worry about, now wants to have an affair with me?

2 years ago I got into a long distance open relationship with an avoidant man, who hasn’t had a relationship last longer than 8 months in the last 10 years… We kept meeting up and traveling together, but when I expressed jealous about our open relationship, he told me he wasn’t ready for exclusivity , relationships and kids, especially with our distance…

He had another connection at the same time, closer distance, who he told me not to worry about as he was pursuing a future with me… Which he slowly demoted.

They seem to have stopped talking and just reunited recently after we had a massive fight during travel. He spent a New Year with her, she traveled to him and he committed to her. And told me today… And also told me he loves me and doesn’t want to lose me and doesn’t want to say goodbye to me, and that I need to make a choice… I told him I would make it easy for him and finish things to which he told me that was the last thing he wanted and that we have a very strong relationship and he will make sure his date doesn’t cause problems about us, but he needs to know that I still love him :)

What the hell is wrong with him? :)

I think at some point he left her for me to pursue a relationship with me… And now he committed to her and asks me to stay in his life? What is wrong with this man, first he wanted marriage with me, then not at all… Then stopped talking to her and then renewed and committed? Why do men do that?

I am kept wondering how is she better than me and if she is than why does he keep trying having emotional affair with me?

Updates
4 mo
He just committed to he 3 days ago and seems like they reconnected 2 months ago…
Updates
4 mo
I’m hurt, It’s very difficult for me but I have decided to step back from him and take distance.
He committed to someone he told me not to worry about, now wants to have an affair with me?
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