How do you know for sure if you are definitely gay/lesbian/bi?

Well, that depends on you. Some people figure it out when they're in their teens, when they're young adults, and some even when they were little. Sometimes it's a process of understanding and figuring yourself out.

Sexuality is actually pretty complex for some people. You could be a grey-a asexual who's attracted to woman, you could be a gay man who's attracted to transmen, you can be a lesbian and only be attracted to women, it's all narrowed down to personal preference. All I can say is, you'll know one day.

I'm still figuring things out myself. I consider myself a grey-a pansexual, (grey-a: not as sexually influenced as others, but not completely repulsed por sex. pansexual: attracted to personality mais than gender)- however, I'm discovering that I might be mais into girls. A lot more. But I have identity issues, and my tastes and views change rapidly at times, so I'm afraid to call myself anything else.

When you know you gay you like boys.When your a lesbian you girls.When your bi you like both.If you don't believe that then do a test.

i think sexuality just grows on us as we grow up, maybe we are always changing, maybe someone may have a gay phase one dia and then be attracted to a woman and marry her, or something like that, i think it may be biological for some people but im not counting on it. I don't know how you know if your gay, lesbian or bi, because i don't know what i am, i think most people have a little bit of everything in them, and then when they get older, some people might have a little mais of something than something else like, a little mais gay than straight or straight than gay or bi or something, and yeah i guess some people might have mais girlish genes or manly genes, but i don't think that has much to do with it, i think amor has mais to do with it but im not sure