Have you ever read the book "He's Just not that into You"? It's written by a man (and a former alcoholic). Its blunt, but simple and very effective.
Some chapters that resonated with me the most were: "He's just not that into you - if he's not calling (or texting)" and "He's just not that into you - if he's DISAPPEARED."
Its the easy way out b.c for whatever's going on w/him - its easier than TELLING you to your face.
It hurts, but reading that book made me feel a whole lot less 'worried' about him laying in a ditch somewhere or unidentifiable in a hospital bed....
Sorry you are going through this.