Originally Posted by redcar
I always think you shouldn't rush into telling people. I always think whats the point? Sexuality is not something that should define you. It's just a small part of you. Some people feel it necessary to tell people as soon as they realise they are bi, gay etc etc, but what different is there keeping it to yourself? It gives you time to get used to it. You say yourself you only realised you will still need time yourself.
So take your time, relax and above all don't feel it necessary to tell people.
I think Alex has a good point here. You don't get finished with puberty until at least 18-19, and you can't really be 100 % sure that you are yet.