Still have a complex from being bullied in school

I was never even bullied to the extremes, it was never physical or online but when I was in school I was pretty much chronically shy, I could barely talk to anyone and my face went all red and I got really embarrassed even answering the register in class. Naturally as children do, other kids found it hilarious to try and wind me up a bit and embarrass me.

It wasn’t even that bad, it was things like laughing at me on the rare occasion I spoke, doing impressions of me, and the one that bothered me the most; girls pretending to be my friends and guys pretending to flirt with me either as a dare or just a joke.

It was never extreme bullying, but the memory of it lingers with me today. I am still young (22) but far past the age of schoolyard bullying and I have never been bullied as an adult.

But I still feel like people are laughing at me. Whenever I go out in public, I’ll hear a group of people laughing (especially teenage girls) and be absolutely convinced they’re laughing at me. I’ll think people are staring at the way I look and find me funny. I’ll take what could only be genuine attempts at friendship or flirting. as if they were a joke. I will usually rebuff genuine advances because I’m convinced the person is really mocking me or doing it as a dare and I want to reject them before they can humiliate me. My long term boyfriend has to constantly reassure me that he is not just with me for a joke and that he actually likes me and finds me attractive.

How do I get over this pathetic childhood complex? I just want to be able to live my life like anyone else can. I doubt the people who “bullied” me even remember me now.