Yes sunshine I totally think it is emotional abuse! From what you have described you feel guilty for being unstable due to your mental health issues and you feel guilty for his dad not being around. It sounds to me like your son knows this and knows what buttons to push with you to get his way. He uses your emotions against you! It sounds like he rules the house and does what he wants without ever considering how you feel. Just because you have allowed him to behave this way doesn't mean he should continue to do so. You said his best friend even says he treats you like poo. So your son knows it's wrong but just continues to do it. That's emotional abuse.