I am sorry if this is not the right place to ask this. Please delete if so. Apologies for the format, I am typing this with tears in my eyes

I originally intended on posting this to a different sub but chose RPW. Also, since he is active on reddit, I'll change some details. Here's is what happened.

I am in my early twenties and Jim (fake name) is in his early thirties. Jim and I met online a few months ago. Could not meet in person because of pandemic. Everything just clicks and he is pursuing me romantically. We can't go a single day without talking. He's constantly calling and texting me and everything is perfect. He is perfect. I don't know where I messed up. I started to develop really strong feelings for him. He says he is too. A few weeks ago I felt something was off. I asked him and he assured me that I was just being paranoid. Things seem to get better for a little while but that feeling returns again. I don't mention it again because I don't want to want to be annoying. A week later he does not want a relationship with me because this is too difficult to work out. I felt heartbroken. We have spoken twice since then. Nothing romantic.

Looking back, I think he was emotionally checking out while I was developing strong feelings for him. I don't blame him or anything. I just want to move on. I feel so sad over it. This was the first time after a long time that I opened up to someone and they just left. I feel ashamed for telling him things I did not tell anyone. It hurts me because here I am crying like an idiot over someone who has moved on. Part of me wants to call him and beg him to take me back but I doubt I'll let myself fall that far no matter how much I am hurt.

Instead of crying like a child, I just want to forget about this. Any advice would be appreciated. Thank you