Recently got dumped by my first girlfriend... help me out, Reddit.

So, Ill try to be as simple as I can with this. I'm 14, and quite a while back I found out a girl that I slightly knew was a redditor. I had no classes with her and we had not really talked much. A little over a month ago I sent her just one link on facebook, which turned into us talking in fb chat every day. We had established that we both liked each other and decided to go out. She became my first girlfriend. I was finally out of a horrible depression, and was feeling the best I have in years. So spring break at a park is where we pretty much spent our first date all day, just about a week after I asked her out. I am a very nervous and shy guy, and she was helping me out with it. We had our first kiss(and my first ever kiss) amd made-out multiple times during the 7 hours we spent together. It was great, I had finally felt like life was worth living. Next day, I spend about the same amount of time with her, but I notice she isn't flirty or really acting the same at all. She sees this guy that goes to our school, says "hold on" and walks over to give him a hug. He proceeds to squeeze her ass. I just say "hey. Hey. Hey." He knew we were dating, he's a weird dude. We walk away and... well... here comes the break-up. She says she wants to be able to flirt with different people whenever she wants and not be tied down. The only thing in my life that made me want to get up in the morning just so I could pass by her in the halls, who was so amazingly compatible for me, was breaking-up with me, so she could decide weather or not she wants a boyfriend that she cares about, or to be able to flirt and make-out with people who don't give two shits about her. Fuck my life. Where am I going to find another gorgeous, 14 year old, athiest, redditor, who has the most amazing personality for me. And the chance of finding another girl like that that JUST SO HAPPENS TO FIND ME ATTRACTIVE is fucking ridiculous. she said she needs time to think about it. But she's already acting like we'll never be together again. I feel like shit reddit. Help me out. Advice. Anything.