When you tried to bring it up, exactly what do you mean? Do you mean that you said, "I want a divorce" and he changed the subject... or do you mean you said, "I'm not happy", after 6 weeks of not talking about it and him maybe thinking things had gotten OK, and he didn't want to deal with it again.

Oh, I don't know that it matters. You need to NEVER talk about this in front of the kids, get yourself to a lawyer, think through how you're going to make ends meet with out his income and how your kids are going to manage living in two different houses (will they go home from school to a different house every other week? Will you be driving to pick up the kids at each other's houses ever few days or so?) How will you divide up the household property and find a way to afford two different houses? Are you or he going to need to find a better job with higher pay in order to do this, or are you going to sell the house you're in & buy two smaller places?

File for divorce and present him with a reasonable settlement offer where you share a fair amount of time with the kids, a fair amount of the current property, and make plans for living on your own income as soon as practicable.

TRY to be nice about it. TRY not to fuss & fume and ask the kids to take sides. Tell him that you want to be amicable about it and you will get a lawyer to draft up agreements to make it happen. Good luck.