How Do I Get A Girl Back From Far Distance?

Hi, I'm going to cut right to it. I'm 14, 15 in October of 2011. And so is this girl. But I live in the Northwest of Missouri and she lives around Little Rock. We're 471.6 miles apart, 7 hours and 35 minutes apart by car. But, we never met each other in person. We started talking on Facebook around the end of 2008/start of 2009. And she's only 4 day older! But anyway, we started talking and became instantly attracted. We tried a long distance relationship that only lasted for about 4 days, but we really fell in love. And it may seem like it's crazy, I'm too young to know what love is, and whatever. But I never felt like this before about ANYBODY! I started treating her like crap, trying to make her jealous to see if she cared as much as I did. But it ended up driving her away. Our relationship lasted about a year and a half, then that's when she told me she didn't love me anymore. I've dated girls that live in the same town as me that I've actually met, but I could never feel the same way as I did about her. She has a boyfriend now, that she says she's in love with. And I got a girlfriend that I like, but don't love. My life is miserable without this girl, I love her and need her back. I want to spend the rest of my life with her! How do I get her back? Please help me!