Is there a way I can find out what my son's mother is using my child support payments for? She doesn't work. She's gets about $500 in food stamps a month, she lives with her parents and doesn't pay rent. Her husband is currently in Federal Prison, and about $140,000 was released to her when he was first incarcerated. Plus, I pay her about $600 in child support every month and our son is on my insurance so he gets free healthcare.

Wow! I wasn't expecting to get so much feedback so soon! Before I go down the route of explaining my background, I'd just like to clarify a few things. Thank you for pointing out that "coexisting" was probably the wrong term to use, but in the future  I'll explain situations where them being near one another may be important. Secondly, I was never married to my ex. We had a child together, that's it. Other than being the mother of my son, she holds no value to me. So when I say wife, she's my 1st and only wife.