at first in grade 6, I had a bit of a crush on a male classmate. I didn't think much of it and i thought it'd be a one-off thing. I wish I had kept contact with him, lol.
I was totally wrong of course. multiple male crushes later, I eventually saw a dick that wasn't mine for the first time when a guyfriend of mine walked past me naked as he was leaving the shower; this happened during my freshman year in high school lol. at first I was shocked, but then I had a boner and I realised I liked it. That's when i knew I was bisexual/sexually into men.