How did some of y'all found out that you're not straight?

Ever since I was a kid all of my actions are questioned by my family wether by the way I talk,walk,style my hair,dress,everything. I was always labeled as "lesbian that needs to be treated by buying girly stuffs" I'm pretty sure that I'm straight since most of my relationships are straight dudes.

it started two years ago where I started getting sexually attracted over my two guy friends ( bi and gay). I'm very fond of skinship and clingy af so I didn't care that much. Idk if I read to much yaoi or what.

After that I started liking a girl from my class, I always labeled it as "girl crush" but this is far from just a crush. I want to have a relationship with her! I'm confused if I really like her or I'm just one of the people I know that loves to pretend they're bi bcoz it's "cool"

I'm so confusion┗( T﹏T )┛ help.