Hi there Matt (and am intrigued about your Progmaster name as well - sounds interesting!) :)
Welcome to Beyond Blue and thank you for coming here and providing this post of yours.
Can I firstly say Congrats to you on working very hard on your illness, in so many respects. Firstly coming here is always a positive step.
But you've also sought out a healthy and physically active routine which you are maintaining and that is awesome.
I'm sorry to hear of the fractured relationship with your 'ex best friend', but from all that you've written, you HAVE done the right thing. And wow, that must have been so hard for you to do that. That would have taken a hell of a lot of courage to build yourself up to do that - and then not knowing what possible 'barbs' might be fired back at you.
You must have honestly felt so let down by this "friend" when you spilled out to her all the issues and background and baggage that you're carrying. When she made all those horrible remarks to you. Just stuff you could really have done without.
Matt, all I can really say is that YES, you've absolutely done the right thing.
One thing you haven't mentioned is whether you have other friends and how those relationships are going? One of those could blossom into a more closer friendship. It could, but if it doesn't then that's ok too.
You really sound very level headed and it was great that you came here. I hope you can post back as well - and I feel sure that there'll be others who'll come here to offer some advice and support for you also.