Why all my crushes seems to be creeped out by me (23M) ?

Why all my crushes are disgusted by me ? It's like we hang out, we seems to get along with each other and then suddenly when I try to deepen the relationship I get pushed back and I can feel their disgust. Considering what I saw some really weird guys doing, I would say I behave with women and try to respect boundaries. When I was a kid, I used to to have a skin condition and to be a nerdy kid. Girls at my school used to make a joke of humiliating their friends by daring them to ask me out. It was always a dare, just the thought of someone being with me was a humiliation. Now I've almost got rid of my skin condition. I try to dress better, exercise a little. I'm not a top model but I think I'm average at least. Yet nothing changes, I still seems to be the same monster I was in highschool. Sometimes, I wish to melt my face with acid just so people would have a reason to be disgusted by it. People tell me to love myself but no matter how I much I try, it doesn't bring any results and the reality of how the outside world treats me always reminds me why my self love doesn't lasts.

Edit : I just remember that my last crush complained about me remembering things like her birthday " or asking her how she's doing when she seems to be not doing fine when I was just "some random guy she enjoys. I feel I was just being considerate and caring but she said she felt I was just doing it to reassure myself. I thought remembering things about people made them like you but I feel it just led her to see me as a creep.