I want to go to another city to visit my ex because I think he still has feelings for me but is afraid of them, am I crazy for doing that?

My ex and I had that crazy type of love for almost three years. We loved each other a lot but had our own problems that affected our relationship to the point where we were fighting every day even about the unnecessary things. I felt like I needed time to get my things straight, and he also knew that we can't continue that way anymore, but especially I still had a lot of personal issues to work on, so I gave up in February, thinking we will get back together if it's meant to be. He was occasionally texting me saying how much he still cares about me and loves me, and just a few weeks after the last message I saw him holding hands with someone else. After we bumped into each other that day, he was thinking about me a few days later and blocked me and then unblocked me again, even though he's in a new relationship. When I confronted him saying that I know he's forcing that new relationship because it's impossible that someone can move on so quickly, he said I was wrong and that he found the right person for him that he's super happy with.

His love for me is something I would never question, because we went through a lot together and it was a lot more than just a simple relationship between us. We had a very special bond and were best friends, and were planning on getting married in the following year. I don't think feelings that strong could vanish just like that. I think he is just scared that if we get back together nothing will change and we will have everyday fights and breakups again, but I know we can work on our problems (there was no cheating, no lying, nothing like that between us). A few days ago he again thought about me and unblocked me.

What do you guys think, should I go to his city and fight for love and the person I know is worth fighting for, or should I just let the best person in my life slip through my hands like that because it was just a bad timing when we were both suffering from our own problems while we were together?
I want to go to another city to visit my ex because I think he still has feelings for me but is afraid of them, am I crazy for doing that?
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