Why can t you let go

This story is my true story at the beginning of the story, I made an inclined back table with him, and we didn't say anything as a result, he is going to be better. I am still wandering in place, hoping that he can come back to me in fact, I scolded him many times, deleted and added him many times. I don't know why I can't let go. It's clear that he's not good at all, but I just care.