I always knew but denied, I guess.
I figured out I was Bi at one point, then I was gonna tell my friend and the night before I was texting her. She's lesbian, and I moved the conversation into like Bi girls at the school and she was like "I don't get it, how you like both. It should be obvious if you like men or women" so then I start thinking to myself, "Do I really like girls, or am I using Bi as an excuse just not to be Gay?" and then I basically realized I was Gay and couldn't even see myself having sex with a girl. So then the next day I told ha I was Gay, and ofcourse she accepted me.