I've got two sisters (I'm the middle) and I ended up liking dudes, but I think that's because my dad wasn't around that much and all I had was women and their disgusting lust for dicks.
By the time my stepdad came into the picture it was too late, I was cursed to a life of fagging around.
Surprised no one here started screaming "BUT GAY GENES"
Lmao yeah no one is born gay/bi
Certain traumatic events that one would like to forget --may prompt one to swing one way or the other though, or stay in the middle.