Any chance we come back to what we had before or should I forget him?

Three months ago, I met a guy on one of the apps I use. We spent hours talking. Really about everything and nothing. A bit about work, a bit about relationships, hobbies, and plans for the future. Actually, we didn't even flirt.

A few days ago, I came to the realization that I love him. I decided not to tell him yet. But during one of the conversations, I felt so good and told him. He reacted badly. That it was never about love for him, that he doesn't want any relationship.

Today, we don't talk anymore. He doesn't have time or replies once a day. I feel guilty. I stopped logging in so he wouldn't feel obliged to contact me. I have never really fallen in love before. And when it finally happened, it was one sided.

I don't know why he is so against a relationship. I don't know if the problem is with me, my appearance or character, or something else. Maybe he had some bad experiences and just needs space. Maybe a complicated situation. I only have my guesses.

Should I close my account on the app? Write him something or better not?

Any chance we come back to what we had before or should I forget him?
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