Also, you without green card, also means your job opportunity will be limited. If you earn less money, he has to pay more child support.
There is child support calculator on the net. E.g.,
http://www.alllaw.com/calculators/childsupport/arizona/
As he "loves" somebody else, the best for you is to move one and give him up. Of course, it will be difficult. For kids, you need to be strong. Also, do not use kids to punish him.