Mixed Signs...?

So there’s this guy. And, well…things have been weird around him lately. We used to flirt, a lot, and talk and pretend we were gonna get married…just fooling around, you know? stuff like that and while that was happening, my world revolved around me WISHING he would ask for my number. I didn’t want to ask for his because, I honestly think guys should make first move and not girls. and guess what? finally he did. then, three days after he asked for my number (and I had been totally ready) he texted me. we talked for about two hours, something like that. the next day at school he didnt talk to me. I thought “maybe he’s just not having a good day?” the next day, not one word. then yesterday, he didn’t talk to me…again. what a suprise? but the thing is, he was talking to another really pretty girl in my class. when normally he would talk to me and NOT her. it was really getting on my nerves. then after school when I was walking to my car he was with his friend behind me and he was talking loudly about how good that other girl looked in class today. I dont know if he is just trying to make me jealous…but it’s kinda bothering me and I cant stop thinking about it. any help? thanks(: