How do I get my crush off my mind?

First off: that really sucks. I'm sorry. I think we all know what it's like to be infatuated with someone that we know just simply will never return those feelings. And like I said, it really sucks. But my advice to you is this: Hold your chin up. You, for sure, will find someone else to like. You'll be surprised how much you like them and how they make you forget about this person. Remember, you said yourself that you're not a match. Even YOU know that. That has to be telling you something. So get out there! You'll never meet that someone if you spend all your time sulking! Good luck haha.

Did you express your feelings to this person? If you did then its whatever because like everyone says theres someone out there for everyone. In order to distract yourself from the rejection just continuing doing your own thing. If you didn't and you're making an assumption that you and this person don't match just tell them for closure. Hope this helps!