Done right it shouldn’t hurt, I’ve managed to convince every female I’ve been with to accept it as normal, its certainly part of every session I have with wives and sub females, some have taken full fists too
I’ve met lots of women that actually don’t like large cock, it can become uncomfortably for then and unpleasurable they would rather have a nice size and some one who knows what they are doing with it
It’s not jealousy it’s the thrill of the chase and the catch for hubby. He wants u to bring out ur inner slut and has given you permission to do it, embrace it make it happen and enjoy urself