<human>: Can you summarize the given text in a few sentences?

I'm kind of panicking right now, so forgive me if this doesn't come off as clear, but I'll give it a shot.

I've been best friends with J since we were in middle school. I've moved about 2 hours away from home a few years ago, but we're still in touch, and he comes to visit me, my wife, and my daughter.

he's in a bit or a rough spot right now. Going back to school, living with his mom, no job or funds, and things are rocky with his girlfriend. Let's call her K for simplicity's sake. 

I've met K a handful of times, but she's very similar to me. A but younger, but she suffers from anxiety. I was in a similar spot to her a few years ago, and J didn't want to talk to me about the problems, so I figured I'd extend an olive branch to K and discuss things with her concerning her state of mind, moving out from home, etc. I'm a very outgoing person by nature, so I wanted to help someone because I had no one to give me advice in my situation. 

K mentioned this today to J, and he was very angry that I had talked to her. He says (through her) that I've betrayed his friendship by talking to her, and has blocked my wife and I from all social media, and refuses to talk to either of us by phone or otherwise. He's also apparently "punishing" K by not talking to her either.

I wish I knew what to do, but I'm just broken inside. It hurts so much that he'd think I was being deceitful or doing anything but trying to help someone who was in my shoes not too long ago, but he won't even let me explain myself. I'm not sure how to be okay with this and handle it, it's just so painful and hard. Mostly posting here to rant/vent I guess.
<bot>: best friend of almost 20 years broke all contact and refuses to discuss things with me. Seems like he won't talk to me ever again. How can I live with myself ever again?