How about this... H, you said you were getting your own bank account. Because I want to make sure I have access to money for the kids, I filed a case for child support with the AG's office.
Close... would this work better?
"You said you were going to get your own bank account. I want to make sure that the kids are protected while we work through this, so I filed a case for child support with the AG's office."
If he's already demonstrated a willingness to try to stick you with the financial burden, you can use that as an example.
Me: 44, Wife: 39 M: 17 years T: 20 years Bomb on 08/25/09 1/13/10: MC started 1/28/10, 2/8/10: More bombs 8/28/10: Wife moved out No talk of D, no movement