We have a similiar situation with the X factor. DH used to have a good relationship with her before I came along because he would hand out money all the time (on top of paying the top level of CS for 4 children) and basically bend over backwards for her. Anyway, now things have changed and the X factor really dislikes me.
That's really sad. My ex bends over backwards for us and also pays over and above what the CSA declares is enough. It's not because he is walked over or I am demanding, it's because he takes care of his children and their mother.