So long story short, after weeks of disagreements, miscommunication and tension which exploded into one big argument, my best friend blocked me on all social media apart from WhatsApp, is completely ignoring me and has essentially erased me from their life.

I've lost friends before and it was fine then, but this one actually fucking hurts because we talked daily, we both confided in and trusted each other with every secret of our lives, and it genuinely felt like we'd be in each other's lives forever. It was brotherhood. I do have 2 other close friends, but this one was the only one that was always there for me throughout my most serious period of depression no matter what.

It hurts even more because the reason why this happened is because I forgot everything that RP and stoicism taught me and let my emotions get the better of me. I easily could have prevented it if I hadn't acted like a child on several occasions. I'm not solely to blame but mostly it is my fault in all honesty. We're both 20 if that matters.

Anyway, I've accepted that this has happened. I know I'm being an emotional faggot rn but I could really use some solid advice, I'm worried that this will re-trigger my depression. So how do I deal with losing my best friend? And is there any possibility that one day we'll be friends again?