It is best to do deep penetration after she is more aroused. That now locks her vaginal area in a position where you can deeply penetrate her. Because in the process of loving someone, you are giving them the power to hurt you. The only way to protect against that is to not love them. That is why it is so important to be careful whom you give your heart to.
Guys are very simple creatures.
Guys, like girls, can have very many and very individualized hot spots. Like the clitoris, the head of the penis is the most sexually sensitive. There are many spots on the body that may or may not be sensitive, like the lips, the neck, behind the knees, or the stomach. A place where there are a lot of nerve endings can be a very sensitive spot. It is good to explore each other's bodies to see what your partner likes and doesn't like.