heyyy, welcome to GTF <3
Trust me, I know it hurts - straight crushes, or unreturned ones for that matter, suck. But, hey - you're young, you've got a whole life ahead of you, and I don't doubt you'll find someone. How many other teens do you think there are out there, just like yourself, who feel like you do? Things will get better, but it is going to take time.
Do stick around though - if you want to talk it our more, or simply get involved with the community, just stick around and chat ^^ you might find it helpeful