A very wise poster who had a really tough monstering MLCer reassured me the kids will be okay as long as one parent is their rock. So just continue to stay tuned to your kids.
I know you have financials still intertwined and that is tricky. I know others have told you to remove your name from any credit cards. This, for sure you should do ASAP. And it's probably best to run a credit report and print that as a benchmark. If you met young and you always handled the financials this may be his time to learn about spending and he may think of it as Monopoly money.
Keep taking care of you and your kids.
Me 41, H 47, M 15 yrs, S11, S13 BD 1: 11/4/14 we work on it; really I pretzel myself BD 2: 3/31/15 H goes down to "dorm room" 8/15: H back to MBR 10/15: H back in dorm room 1/18: H files, now divorced