When you're your age you're overrun with hormones. You're just coming into adulthood, you're just starting to figure out the world. Everything feels desperately important.

People telling you it isn't love are probably a little bit older. They're right, but it's hard for you to understand that now.
We all went through it, people tried to help us. We mostly didn't listen or understand. We all had to learn for ourselves. We all try to help the next generation, they mostly don't listen or don't understand...rinse and repeat.
Anyways, the fella you love doesn't exist, the fella you love was a character played by a skilled actor who also happens to be a shithead in his real life. Yeah, it hurts, bad. It will pass, I promise. I was madly, desperately, eternally, and truly in love with at least two or three different girls in high school. I can hardly remember them, these girls I agonized over.
So...I guess just hang in there, life gets better.
You sound like you've got a pretty good head on your shoulders, so come away from this a little wiser. You don't have to be scared of the world, but it's okay to look at things and people with a critical eye. Don't wear your heart on your sleeve and don't spend money like water. People will take advantage.