I can’t appear and talk confidently infront of people I’m interested in

Basically, I’m currently in high school and a very social and fridenly person, but that persona is only there when I’m at the school. I have almost no problem striking up a conversation with a random kid at the cafeteria let alone making new friends. A lot of my peers even like to call me charming.

*Oh and, keep in mind my school’s an all boys school*

Anyways, when I’m outside of school, around adults and girls im interested in, I become a diff person. Talking to girls im not interested in, is no big deal actually, But there’s one girl i like and my charm somehow becomes non existent when we chat, the same goes for when i talk to/am with adults.

I automatically become shy and can’t crack jokes that i somehow seem to do effortlessly when I’m with kids my age, I become self conscious, I’m afraid they’ll stop talking to me, I can’t say what I want to since I’m afraid I’ll upset them. I also, sometimes, start putting up fake personalities, sometimes being a complete douche, and sometimes a nice goody two shoes.

and I personally do not think it’s social anxiety, since i do feel like i have control but i still have the fear of getting embarrassed, fear of looking obnoxious, fear of being annoying. Oh and keep in mind, I get anxious infront of people I want to impress/be respected by/get close to, but I have none of those feelings when the person infront of me is someone who’s relation with me, be it bad or good, won’t effect me much.

i hope what i was trying to say wasnt confusing
if u read this far, thanks a ton, i appreciate you spending your time by helping a random stranger on the internet 🙂