This makes me suspicious. Is this OW getting him to find out if what you told her is true?
Do you control the accounts? Sounds like you do. If so, but your H has access - then protect yourself.
It does raise a question in my mind though, what does your H know about your M? He sounds more like your child than your H.
I must admit that pre bomb and A, I had always dealt with the money.....however my H was the one that earned it....so he ultimately had control in that he could get it paid into another bank account if he wanted etc.
Now we are a partnership and deal with the finances together.
How well have you and your H communicated over the years?
Saffie me 46 H 46 M in 1986 D20,D18,S16,D13 H's A 01/05 to 07/06 H recommitted to M 07/06 renewed vows 09/06 Going from strength to strength