Your son id doing the same thing i did when i was his age. Sadly its s tough thing to get rid of. My mom had to actually buy and diaper me for like a month and after that i had no intrest in them. So thats my suggestion. You should try that see if it works. Apparently for me it was some sort of weird mental fixation that i had to fufill to get rid of. So try that but if it is something bathroom related. Seek a urologist soon. I been to one recently being 25 it helped reasure i was fine
I don't think something is mentally wrong with your son. I think he's just trying to get some attention from you. Maybe his diaper addiction is to have attention from you. Diapering is a kind of attention the parents give to their children when they are young! Maybe that's what your son is looking for. Maybe is it because of the separation of his father and yourself ? Kids can sometimes be really affected after a separation. He's trying to find some love out of there!! I think you should talk to your son, be with him more often, and try to be interested by what he does, what he likes, etc. That's what I think. Maybe is it a problem too ? Maybe your son has a poopy problem but doesn't want to tell you ? He might be shy to tell you! That would explain why he is stealing diapers and why he is pooping in his underwear ? Then you should visit a doctor to make sure it's not a problem. And if it is, then you might have to diaper your son ? At that age it's not easy! You'll have to talk to him about that, and if he would agreed to be diapered. Or maybe is it just a fantasy ? Who knows... I hope this helps! If you want more help or just talk about anything, just message me at : ***@**** !
Phil