Afraid about having to tell i was bullied

It's been like this since middle school when i started getting bullied, i didn't want to tell even my parents for reasons i don't even know but they eventually found out about it, after it i changed school and i was someone else, i don't even remember how i was before anymore, i had social anxiety and didn't trust anyone so obviously i made no friends at all, now after some years things started to get better, i'm in high school again and i've made a few friends but still i'm afraid one day they'll ask about me and i'll have to tell them they're my only friends because i was bullied and that's why i'm so shy (socially anxious), i don't know if i should keep hiding it, i feel like it's a weight that really stops me from opening up with people but at the sime i'm afraid they'll see me in another way like weak and they'll start treating me differently, how should i tell them anyway?