So, over the summer I made a really close friendships very quickly with someone who also suffers of mental illness (I don't personally know which one).. Long story very short, after a few months, my emotional health (I'm diagnosed BPD and AVPD) had become very much second place to taking care of their constant anxieties and I was feeling exhausted, I tried to begin to politely explain that I need a little less time answering text messages.. My correspondence became a little infrequent as I tried to keep myself from compulsively replying to this person (I've been in relationships where taking more than five minutes to reply would be grounds for emotional punishment, and I hate being in that mode now for obvious reasons). Turns out, my friend then claimed abandonment and very openly tried to replace me as their "best friend" online.. So I decided this was violating my boundaries, I don't like mind games, and I'm done being friends. Two days later, I was sent a message from my friend (Dave, let's say) saying that I was an awful person for not caring that he was depressed and fuck me for not being as involved in the friendship as he was, he was going to kill himself etc.. I felt too stunned for about a week to even reply to it, I just kept ruminating over it trying not to hate myself about it. (I did reach out to a mutual friend to make sure he was alive, though.. was told to apologize to him..) Long story short again, we attempted to become friends but I was out of trust in this person, I felt he hadn't actually cared about Me as an individual, and any attempts I made to explain myself started him in a tizzy. I couldn't make boundaries with him, so I quit. 

Fast forward to a few weeks later, I made a new acquaintance who had just been through something slightly similar and decided to open up about what happened between me and Dave to them. They pried pretty heavily into the details of what happened and, against my better judgement, decided to trust her and answered all the questions she had and ended up showing screenshots of the "suicide note" Dave had sent me, forgetting to block out his account name or anything.. About a week later, I'm struggling with horrible PMDD and feeling really low and worthless when I notice my friend had now begun a friendship with Dave! I felt super betrayed and messaged her about how I felt and all I got was a "what?" and being ignored for a day. So I "soft blocked" her (blocked and then unblocked so that she can't have access to my private twitter account) and went about my day.. To check later and see she'd called me tacky for doing that. So I messaged her again, defending myself.. Saying it's really rude to me what she's doing, how it's shady, etc.. This is a friend who would randomly message me checking on me, wanting me to be okay, tell me she couldn't wait to get to know me more.. Made me feel like I could recover and trust people again a bit. All she replied with so far is "why are you looking at my account, I barely know you".. I'm feeling kind of crazy right now! And worthless! And weird! And creepy! AND ANGRY! Betrayed, sad, broken, etc. 


Sigh, so basically.. besides isolating myself (which I feel like doing hardcore).. what advice does anyone have? I feel like I'm the most unlikeable, unwanted, least valuable person on Earth right now. I feel pretty alone. I feel like ever since I decided to stop getting walked over all the time and set boundaries for myself, no one likes me anymore.  In the past, I would've taken this as a challenge to "win" this persons friendship over Dave's, but I don't have the willpower for that anymore. Thanks to anyone who read this. 

TL;DR: I started making a friend, he had me open up about an experience with a close friend gone wrong, and has decided to go and become friends with my old friend and is acting like we were never friends. How can I keep my wits about this?! 