I agree with some of the comments below
it's going to take time
trust me
i know them feels too well (HEAVY SIGH)
this actually happened to me quite recently
but the best thing to do is try to stay busy with other things and listen to music.

Empowering im-a-beautiful-princess-that-dont-need-no-man kind music

thats what (cough) i did at least LOL,

Well, there's no spescific way to get over someone, and i wish there was becuase i got my heart broken a few months ago. Just try to focuss and do your thing, continue with your music lessons and your life, try not to pay attention to him.

Music is better than crushes. Trust me. Haha.

Well, you have a same problem as my friend too..... To get over your crush? Don't think about him or ignore him or don't be nice to him so that he won't talk or chat or like he wouldn't be nice to you anymore or just tried to forget about him... I don't know since it is your heart what is telling you not your brain.... You can't do nothing once you got your crush and can't forget about him....

Lol I've been here and still haven't found a solution......
Truthfully their is no way out really,I've had this one crush that I THINK I'm over but he always pops up and I KNOW it's a hopeless crush yet I'm bounded to end up likeing for a reason I'll never understand but everytime I like him and I know this I try to tell myself to stop,I try to point out his flaws to myself,I try to reason with my self on why he wouldn't even look my way and it sorta works but.....it comes back every school year it seems....I guess you either find someone else or you let time deal with it I guess
Sorry this is all I have but I do understand what you mean!!

think of your bias :D imagine your bias as your bf xD

It doesn't sound very meaninful. Just come to terms with the fact that he already has someone and you can't do nothing there

Lol i have the same problem as you,except i have to see my crush for like 8 hours a day (school~)
Your not gonna get over him like that. It take time. Try to take your mind off him. Don't fangirl. And when you feel like your really wanna talk about him or keep thinking about him, dont. Cause that is just gonna get you caught up more in the fact that you really want to get over him, and you like him, and it will be more heart breaking (that happend to me ;D)
You should try to stop thinking about it. Find someone else. Try to crush on others. Or just leave love for a while (not too long just saying)
Really, you just have to try to forget him. Distract your self. And empty your self. (Breathe in and out)
If you really want to think about your life for a while.
Well I hope you get better Unnie! Im cheering you on so you can meet a guy that treats you well with love <3 SARANGE~!

Hmm.. Try to be friends with him at least? I was friends with many of my crushes and it was hard at first but later it is really much fun and I got over them^^

someone else.

I would tell you to find someone else...but I can't imagine that to be easy. The only thing you can do is remind yourself constantly that he isn't everything and that there is probably someone else waiting out there for you. Try distracting yourself by focusing on things beside him. For instance, when I was getting over my first crush, I threw myself at school and sports. Honestly, try talking your way through getting over him. Simply talk to your friends about everything but him and move on like that. Ugh, I can't imagine that my advice is helpful, but I tried! Good luck and keep on keeping on~ ^^

Move on...before it gets heartbreaking

Distract yourself from thinking so much