the way I see it, it's one less person to take up your time. so now you can focus on your music. I had somewhat of a similar situation....like I was best friends with this girl for like 5 years (no attraction or anything, i'm completely straight 
) And she did something incredibly stupid one night when she was drunk. she basically lost her virginity to some guy she met 10 min ago at the party we were at. an hour later, she was walking around the house completely naked with a blanket wrapped around her asking people for condoms. she looked like such a dumb slut, I was embarrassed for her. that was our first big fight, we actually got over it after a couple of weeks, but it just wasn't the same anymore. Like I didn't know she had such low self esteem that she would fuck a random guy out of no where and use the excuse of being drunk to do it. Anyway I realize now that she took up so much of my time, and I'm glad our friendship ended cuz I can finally focus on practicing properly. 
Well I told her I didn't think it was really a big deal or anything and we sorta just left it behind, and we're still the bestest friends and I could never imagine my life without her, she's just so... I... She's a bit like a sister to me, except that I don't yell and diminish and order her around like I do with my real sisters And she's the person that got me into playing guitar too!! And she's good as hell in it.
As a response t oall these talks about friendships breaking, I have a counter argument... story... thing... to tell
It was midsummer's eve and we were at a cottage with some friends, amongst them one of the best friends I have, a girl, to whom I actually had had feeling for but because I didn't want to spoil our friendship that had started pretty much when we were 2 year olds, we never had anything between us. So, there we were, both drunk, I was sitting next to her, and suddenly she wants to kiss me!! Well I was so wasted I didn't see anything wrong with it, so we made ut for about 10-15 minutes or something, but we didn't go past that (luckily).
The next morning she was like nothing had ever happened, so I let it be, because I myself didn't see that much damage done, it was just drunktard stupidness. So, a few days after this I asked her if sh eremembered anything, and she said no. I wandered if I should tell her a while and then decided she better know what we did. The response I got from her was the last thing I had expected, she was worried if I had been traumatized because of it!!
hickeys are TEH KRIEG! 
