Please ladies tell me if I'm over my head...

My husband got 3 kids from previous relationship but one of his baby mother seem to be involved a lot more than what's needed... yes I understand that he loved her more than the other but if she's an ex what's still so important beside the kids???

Anyone knows me know I hate nothing more than a lier!

It's not that he's lying to me but he's keeping things from me which pisses me off... they get money every week from his wages but yet still she always asking for more like trust every week she's asking for money! If I ask him now I get so many excuse on he as to pay this or he as to do that but what he doesn't know is I know his bank password (well lucky guess) it's not like is small amount... I don't know why he as to hide it from me.

Honestly ladies I'm on the verge of asking him for a divorce and he can go back with her for I've been trying to work with this for almost 6years with no change I'm tired of talking to him about it.

Please I need some advice ladies otherwise I'll be asking for a divorce very soon... I can go to my family as I'm a very private person they don't know half of it...