There are many ways I fucked up with you and I'm not entirely sure where to start. I could have reacted differently in the van between Walter and Mac that night, laid down the rules and made them crystal. I know you'd have honored them.
I could have kept my short-comings to myself rather than prey on your instability and affection. I should never have initiated whatever it was we had, sharing a bed, regardless of how fond the memories are. Had I had that willpower, had I not been looking out for my own interests and been able to admit my faults, I wouldn't have let you think it was your fault. I would have admitted you were right, that the term "using" could be applied to the situation. Even then, you were unfathomably stronger than me. Had any of that been the case, I wouldn't have run away from you, blamed you when my bluff was called.
In all honesty, I'm not sure if I've gotten that in check yet. And because of it, I voluntarily slammed the door and set fire to the bridge leading to my best friend. Demonized you when all you wanted was a reason, some semblance of why or, forbid, closure.
I'm sorry I was the most horrible of friends and preyed on you in a time of greatest need. I'm sorry I had the gall to let you think it was all your fault. I'm sorry I ran away, hurling threats and accusations as you tried to follow in your confusion. I'm sorry I betrayed your trust after pushing so hard for it. I'm sorry I haven't been there for you through everything the past two years have thrown at you. I'm sorry the first thing resembling contact was over something so stupid as someone out for revenge. I'm sorry for clicking the like button by mistake and leaving you to deal with the heart attack and confusion without any sort of reference. I'm sorry it took two years to write this, and longer before it's actually delivered. I'm sorry I wasn't the friend you deserved, and for a million other things I did wrong that caused everything to go wrong.
I'd like to think I'm not that toxic person now. I'd like to think that now I've acknowledged what I've done, I'll be more conscious of it to prevent another occurrence. But I'm not confident in myself. And I don't want to cause even more damage trying to make amends before I can promise a clean personality.