Is moving on this tough?

I don’t know if what I’m feeling means I haven’t moved on from my past. I was in a relationship for three years, and for me, it was nothing short of heaven. Every moment spent with my partner was filled with love and joy. But then, in the last six months of the relationship, out of nowhere, we started fighting. I live in South Bombay, and she lives in Andheri. I have a job, and she doesn’t, but even though I was busy, whenever I got the chance, I made sure to give her my time. She was my first love, my first relationship. During the last six months, we fought only over texts and calls, but whenever we met in person, we never argued not once. I don’t know what happened, but these fights would start over silly things and small issues. After every fight, she’d say she wanted to break up. She even broke up with me for a couple of days, and I always got her back because we both knew we were there for each other. But in the final months of our relationship, I was struggling with work, and I’m a small-time content creator, so everything wasn’t going well. I started to hate my life, feel sad, and maybe even a bit depressed. On a bad day at work, I would still forget everything and call her because she made me happy. But 10 minutes into the call, we’d end up fighting again. Eventually, I reached a point where I was done. I told her I wanted to break up. And then yeah we broke up. She called me five days later, wanting to get back together. But I told her I needed some time I planned to go out and enjoy myself with the boys (not in a reckless way). The next day, when I called her back, she told me that she had downloaded Tinder and found someone else. Now, the guy has cheated on her, and she just wants to be friends and meet up as friends. But I still long for her. I still love her. The only thing I can do is ask her not to meet up until she feels the same way about me. Sometimes, I still cry. I’ve started writing poems and letters for her, thinking maybe one day, when we meet again, I’ll give her the letter. I don’t know what to do… I don’t understand what’s going on with me. I really want to move on.