How do i get over the guy i love?

sorry if this is long. D: okay, well my best friend was telling me how her cousin was coming over during the summer & staying there for a little. she told me about him & i got excited because he seemed really nice & fun. at that point, i just wanted to meet him because of what i just said, he seemed nice & fun. i didn't have any intentions on "falling for him" because he was 16 & i was only 13. then one day at school, my other friend told me that he was really cute, so of course, being a teenage girl, i wanted to meet him even more. when i finally did get to meet him, i was really shy because that's just how i am. i would smile at him, look down at the ground, twirl my hair a little. i though he was really cute & nice. later that week, i started talking to him on AIM & going to my friends house a lot more. when i was there, me him & my best friend would hang out. we would usually walk to the park or just walk around her neighborhood. i still kept talking to him on AIM. that's when i really really started to like him. he told me he liked me too. sadly, he told me that on AIM. i kept hanging out with them & kept falling & falling for him. i had no control over it at this point. i would spend nights staying up until two in the morning, just talking to him. i liked that he was obviously more mature then all of the other guys i know, & he was just easy to talk to. later in that summer, i didn't talk to him that much & i stopped going over her house when he was there. when i did talk to him again, it was about october or november. he told me he had fell in love with another girl. this had really hurt me & i cried a lot. at least a month later, i asked how he was & he told me he was horrible because they broke up. after that, we didn't talk for at least three weeks at a time. by this, i was miserable. i wouldn't hang out with my friends, my grades dropped. a lot of my friends tried help me get over him. well, at least only my online friends because at the time i was too embarred to tell my real life friends. EVERYONE i told was telling me i needed to get over him. i couldn't though. no matter what anyone told me, my feelings stayed the same. by then i realized, i was young but in love. i didn't want to be, trust me! i didn't want to feel this horrible, but when i heard his name or saw a picture, i got a strange feeling that made me dizzy & sick to my stomach. weird enough, i loved that feeling. recently he dated one of my other friends. he's been miserable because of HER. i write poems about it, even as corny as that is. i haven't talked to him in a while.