It sounds like he's treating you like a sibling and is trying to engage you in play just like he would a brother or sister. Now you need to treat him like his MOTHER would if he did this to her. She would snap and snarl and would ignore him completely until he behaved. You need to do the same thing. Firmly put him away from you and get your hands out of reach. If he jumps on you, turn your back on him and don't pay any attention to him at all. Don't put anything in her mouth or acknowlege her at all. When she settles down, YOU engage HER in play and make it a fun time as long as she behaves. When you say it's time to stop, it's time to stop.
She will soon fall in line.
I would recommend a behavior class for the two of you so that you can stay in control of her.
Let me know if you still have questions.
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