You’re right about the motivations of many, if not most, girls, vkn. My girlfriend is very petite and extra tight down there. She has never been able to get past the pain at insertion or even moderate pumping. I believe her problem is psychological more than physical, but it really feels as if I’m raping her the way she reacts on entry.
Anyway, she just asked if I would cool it, but didn’t tell me to stop. We have a 20 year age difference and she is very conciliatory, so she doesn’t really tell me to do anything (I had enough of that when I was married). She also isn’t jealous at all. In fact, she told me to find someone to take care of my sexual needs when her sex drive went down to zero from anti-depressants. So, I really think her motivation was sincere.