BF Says I Squeeze Him Out of My Vagina & Numb His Penis

Dear Betty,
I'm in what seems to be a unique situation . My bf says I do things like squeeze and push him out my vagina and it numbs his penis and makes it go down and lose blood flow. Have you heard of this before ? He says this has happened to him before and makes him feel like I'm rejecting him sexually which I think is obsurd of course. Because I have no control of when this happens, or at least don't feel it. He says i need to relax and.