First, welcome!
And you'd be surprised how understanding even straight friends can be if you let them it.
Though, also, it's entirely likely you'll find more gay boys (or lesbians - if you're just looking for friends, consider both, yes?) as they start coming out. I doubt there are only two of you at your school; the rest are just in hiding.
I guess after that all I can suggest is, wait until college. It gets better.
Hmm...I know among my friends, at least, we tend to discuss "significant others" or "the attractive sex", which makes things a lot easier. It makes sense that others will talk about straight couples because they're straight. They're not trying to make you feel bad, but it makes no sense for them to talk about having same-sex partners if they're straight. Be yourself and don't let it make you feel like an outsider, because you're not.
Also, Castro resigning? He's been in office for longer than the gay rights movement has really been going, so I guess it seems like bigger news.
Doesn't mean that your news isn't important - keep bringing it up.
Yeah. Sorry if this was overlong, just trying to help out.
But hey, now you've got your very own laptop-sized gay community. Oasis will really help.

Best of luck.

"She's a mystery
She's too much for me
But I keep coming back for more
She's just the girl I'm looking for"
-The Click Five "Just the Girl"