When did you know you were gay?

Hey,So I posted a few months ago on /r/sex about sexuality, and after thinking about a load of stuff, I'm still not sure if I'm gay, Bi or straight.One thing I learnt from my last post was that labels don't help much, and it's more about what you feel is right, not what a label tells you to be. Having said that, I'm almost certain that I'm more gay than not-gay.Because i don't really know for sure, I don't really want to discuss it bother my parents, and I don't really feel like I have any friends I could talk to either.So yeah. When did you know you were gay/bi/other? Did you discuss it with others before you fully came out, or did you tell everyone at the same time?