Probably the guilt of what he has done, and he feels he had gone too far to come back? I think you are doing the right thing by praying and working on yourself. I know what you mean about trust --- I doubt I will ever completely trust my H either. He crossed a line that caused too much pain. I think we would be fools to trust again. But, I do trust in parts of our lives --- enough to function well, I think.
Take care.
Me:57 H:52 M:28 Got another lawyer last year and filed. D35,S/D twins28,D22 EA4/04 End? Who knows? "Life is like a mirror. Smile at it and it smiles back at you." — Peace Pilgrim