The best way to understand something is by doing a thorough homework over the same.
For scientists to come up with any kind of findings, a lot of research works have to be done.
It is therefore as important as taking a research on a given topic, for a man to ask his woman if she is fine with the size of his penis.
A woman enjoys sex with a man who has the right size of the penis she prefers.
Some penises are too large for some women, which make it hard for them to enjoy sex. This is basically because the bigger 'banana' ends up hurting them. Other sizes are too small for other women, making them unsatisfied at the end of the act.
A man who understands what his woman wants in bed knows how to tackle it with whichever the size of his manhood. One can do this by employing certain styles that suit the situations, depending on his size.
While knowing if she is satisfied with your penis size will serve the purpose of how to handle her, men find it hard to ask their women such as questions.
Some women also find it hard to answer such questions, which makes it more complicated.
The best way to ask her if she is satisfied with your size is by asking her this one question:
Given a chance, will you increase, reduce or maintain the size of my penis?
If with given a chance she reduces it, then it is hurting her. If she will go for increasing it, it means it too small for her.
She will be fully satisfied if she maintains the size. This means it is delivering to her what she expected.