Guys please read this and give me your advice on what i should do!

Right now i am a jounior in high school. My sophomore year i met this guy in my biology class, and over the time we became really good friends. I started to like him a lot...(and still do). So anyways then i he starts to like me too. Because he askes me out. I was so happy. Well a week later, he dumps me and says he just wants us to stay good friends, like we were before. So That was ok with me. We stayed like best friends. Then after school ended and summer came we hadnt talked for a while. I wanted to call but didnt for fear he didnt want to talk to me...(i know its weird). But anyways my friends throw me a surprize birthday party. And he is there! We talk for a long time he tells me how he wanted to call me but didnt know if i wanted to talk to him...i told him i felt the same. We were just laying there on the trampoline watching these shooting stars, and im laying my head on his chest facing him with my eyes closed. We are just talking and then he kisses me. We start kissing a little more and then he tells me that he has thought about me all summer and was so happy that he was finally here to see me. So after the party we walk hand in hand up the street and we wait for his friend to get the car. Then i give him a hug and we kiss good bye. Then he leaves. So then i call him a couple of days later. And we start calling eachother more often. So then its tuesday and only a week until we go back to school. He calls me and tells me how much he had missed me and all that. And he then tells me that he has someting very important to tell me. He tells me that there hasnt been a moment that he was thinking or dreaming about me and all that and that he really thinks he loves me. I was so happy to here that because i have felt the same way for so long, and i always felt that he did to but was scared to tell me. Of course i didnt want to say it first because i didnt want to scare him off or make him feel weird to be around me, cause more than anything him friendship means a lot to me. So anyways we dont get to talk the rest of that week on account of i was really busy. So then monday comes and we see each other at school, and i was thinking maybe this would be the day he asks me out or something...because this would be the first time we have seen eachother since the time of my party. But i see him and every thing seems awkward...he doesnt even bring anything like that up, he kinda acts as if it were like never said. Does this mean he doesnt mean what he said anymore? Did he change his mind? Is he to shy about that....should i just come out and ask him what is going on between us? Or what? Because i know that he is shy ...well about that. Because he was so shy just saying he loved me on the phone i know he was kinda scared off what i would say. But once he said it he wasnt afraid to admit it anymore. But anyways should i wait for him? or should i step up first? Guys i need your advice mostly i know you are all different about this stuff than girls are. So please what should i do? And if you think that i should go up to him first, what should i say? how can or do i come out and say or ask him about this? thanx for your advice, i really appreciate it! love isobella