I guess depends how mcuh people around are you so 'into' your life and what they expect.I'd say it's not a big deal to everyone but some might see it like it.

What you have to think of is...

How would they take it?

Do you think they probably suspect anything?

Would it benefit you if you told them?

I asked myself those three questions before I came out and pretty summed up that they would take it fine and in my situation better for them to take it in now and comes to terms with it before I stand on their doorstep when I'm 22 with my partner in one hand and the GT mag in the next.

Plus it benefited me because I didn't have to keep any lingering thoughts kept in so much and go with the flow of people mentioning girlfriends, etc.. and getting married and having my own kids, etc...