found this about a month late, and i'm not sure what the circumstances of your situation are, but i feel for you and thought i'd comment because i went through a similar situation about a year ago. my best friend of 5 years and i were very codependent, got into a sudden, blowout fight, and did not talk for months! it felt like a romantic breakup and i'd imagine you feel the same!
i'd say the biggest things that helped me deal and heal were 1. time and 2. somehow getting closure. by not communicating with her, i was ruminating on everything that went wrong and all the positive things i missed about our friendship. when we finally caught up, time had made both of us different people, and it was easier to see the reasons why we had stopped talking in the first place and why it might be for the better. enjoying and forming new friendships was also helpful, with people i was compatible with in different ways and fit in this new phase of my life. but i'm wishing you luck, losing a friend makes you feel lonely and rejected and in pain. but that feeling will pass
