Glam, I'm glad to see that you and the kids got out for a bit yesterday. I'm actually surprised that your h showed up, but then again, he needed something from you. I'm sorry that he even had the audacity to ask for a loan considering the fact that you are taking care of a home and kids right now pretty much on your own, But, that's the mind set of a "tweens" in crisis. He still looks to you to be his mother and take care of everything for him.
Glam, for what it's worth, I think you are on the right track. Your mortgage had to be paid, you have children to take care of and your check only goes so far. You just didn't have the funds to help him out. He's so clueless about finances right now. Money doesn't stretch but so far when there is only one salary being utilized. He'll either get over his hissy fit or he won't, but that's not your problem. Until he wakes up...yes, it will be about money....
Take care of yourself. You are the responsible adult in this situation for now. Do not ever second doubt yourself...it's not worth it.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.