"now he's going to tell him that he can't b/c he has to pay for D9's therapy b/c I'm not working he says."
I hope you kept this email. Isn't this called alienation or something along those lines?
Wouldn't it be nice to say back, "And I'll tell D9 that I'm not working because her low life SOB of a father had sex with another woman and decided to break up the family causing me to change my work status that was decided together when we were married. Now, because he wants to remain with the slut, I'm suppose to find a job during the worst economy ever, after I sacrificed my work status and job experience to stay home with the kids never thinking I had to cover my as$ in case you left me high and dry."