So sorry to hear you're going through this. It's not abnormal for this sort of hostility towards you for asking questions and trying to hang out. I remember in the beginning, didn't understand the problem and bought W flowers...she just looked at them, sneered, asks "what are *these* for?".
Stick to the 180 and read the rules detailed in the forum stickies...don't ask what the problem is. He may eventually tell you but trying to get dialog when they're like this is not going to lead to anything constructive.
Resentment occurs when we aren't doing what we need to care for ourselves, though we expect others to do it for us.