(Serious) How did you know that you were gay?

Serious question, genuinely pondering this question recently. It seems impossible to come out and say it. Guess we are all at different stages of our maturity.I'm interested personally as an asexual all my life. I might be gay but dont know it, see myself recently as half straight these days. Gendered confusion honestly got me thinking, would seem like you guys have passed through this stage and are not in a weird state of limbo like me. Would genuinely like to hear your opinions.To be offensive and honest here Hope you understand and not take offense, my image of gays is something alpha. I can't wrap my head around one thing, if i ever was gay there is no way im sucking dick or taking anal. Can anyone relate to this staement?How did you know you were gay?