There's this girl with down syndrome that I've known for a long time, but she's crushing on me and I'm gay! I really want to tell her that I am, but I don't know how she'll take it or if she'll even understand! Please help, should I tell her I'm gay?

And another thing is, she's like my only friend...I'm shy and I don't want to lose her as a friend cuz then I'd have none. Yes, I'm probably the least "popular" senior in my school with the least amount of friends.

Oh and I'm not out to anyone yet.