SUBREDDIT: r/relationships
TITLE: I [21M] could use advice on getting over my best friend and bandmate [20F]
POST: What's up err'one. Generic throwaway man here, just so I don't get grief from buddies who follow basketball with me. I also could have this tagged wrong.

I've known this girl a long time. She and I became best friends back early in high school. She's someone who I've shared a lot of life and a lot of fun with, but on occasion going back about two years I'll get feelings for her - it waxes and wanes time to time.

We talked about it before and she hasn't had feelings for me (and I know she doesn't still) which is fine because I'd really rather not date anybody I know that well already. We basically became friends before I had any romantic interest and it stuck that way before I could ever have thought to try furthering our relatonship.

She and I are aspiring to be professional musicians, starting with a band that we both are in (our main project) but we're going to branch into different genres and formats. To put it simply, she and I go hand-in-hand creatively, and we're an amazing team.

If it were any other friendzone-type situation I would just cut her out and move on with my life but I can't and won't here because she's an integral part of the pursuit of my life's work and passion. I recognize I don't have much substance here but I would really appreciate some advice on how to move on from these thoughts that are bringing me down, at least until I can find a partner because I have no idea when that'll be... anything is appreciated. I'd be glad to fill in any detail.
TL;DR: 
I could really just use some advice on how to move on from this chick that I can't be with because we're passionate about music and in a band together.