Yes. Yes you are. That's like me getting pissed off because my niece who is 3 kidnaps my boyfriend when he comes over. It's useless. I mean, are you seriously jealous of a two year old? I hope not.
Hahah, made me think of that guy from New Moon who got imprinted on a two year old. Haha. Aw, it's not that bad... did you get to dance with him eventually?
I don't think you should be jealous of a two year old... Assuming he can't date the kid (which he kind of can't in any way without getting a few years in prison), it's not a big deal. And he didn't really reject you. He was just playing with a kid.
If she was actually 2 years old I'd say let it go, he's sweet for playing with the children. Otherwise, I'd say wait til the next one. And dress like you're seventeen. He'll be more turned on. And if he's not then drop him because he clearly has issues. Sorry you didn't get to dance with your crush. Did you have fun either way? (I know that dancing/not dancing with your crush can make/break your night so I'll understand if you didn't enjoy yourself)