Fiancé just disappeared

Whelp. It was always a thing that could happen. I knew the chances.

My fiancé... or ex fiancé I guess... and I ended up on two separate vacations this week. Me diving in Mexico, him visiting his brother in Illinois.

After two days of not hearing from him, he's sent me a long text telling me he's not coming home and he's disappearing. He's shut off all socal media, his phone and even his emails.

He almost did this once before, the first year we started dating, but didn't actually go completely dark and came back a month later (we didn't date again for six months). I always knew the damage from his childhood could be an issue again, but I thought after so many years I thought he'd decided to fight for himself for good.