Ok...Well, based on your information which is becoming more clear, I would not return to her! LOVE is not the reason she wants you back. At first, I wasn't sure if the 6 year old was common to the two of you! Continue your financial support to "YOUR" son and remain an integral part of his life. He needs a father! Do not reunite with the wife for the "child's sake." I assure you that it will only be worse for him!!! Harsh reality does suck...but, none-the-less...it is reality!!!

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I wish all the ladies were pies on the shelf...and I was the baker because I'd eat them all myself.
I wish all the ladies were potholes in the road...and I was a dumptruck because I'd fill them with my load.