What to do with those guts feelings?

Anonymous
In June 2021 I've met a guy. Awesome energy magic meeting.
The guy was so enthusiastic, ready to start a beautiful relation with me, to compromise intensely.
I was dealing with a past traumatic relationship. I was honest with him but maybe it was hard to grasp my emotional state meanwhile I was very high on life.

We staid 4 months together, let it flow, beautiful until we fought and I was not as supportive to him as he was for me. I was just telling him I need to grow, I am not ready I need to travel and he was settling and telling me to do so with him.
We broke up, I left to my family in my native country.
After a month I message him, he was missing me. Few weeks later I message him again he then told me quite cold he was cutting ties with me.

I emailed him 2 other times through the year, one time just missing him another because I heard something bad had happened to him. He never replied.

I stayed here working on myself, quite bad, letting myself deal with emotions, I thought was the best to do.
Never went to him as the covid lock countries.

Today I still think of him, so many different ways, I guess because he did a lot of effort and helped me to reconnect with life. I don't think I marked his life materially as he did, my purpose back then was to give on a subtil level, mental, spiritual, which is harder to grasp but to me had important value.

Today I feel more balance , I worked on the stuff that were wrong about me, didn't heal it all of course.
I keep thinking he was a great partner. And I was shining back then with him.

What should I do? I heard he is building a great life and I feel low confidence and lower vibration: I didn't do great material accomplishment even tho I've developped myself too, beside crying him.
Its hard to carry on my life because I keep not wanting to forget him. I am so afraid to do more mistakes in life, misvaluing and live in regret for being impulsive and not seeing the big picture...

What do you think?
What to do with those guts feelings?
5 Opinion