Think about electrical sockets. You have a masculine socket and a feminine socket. Bringing them together enables the energy to flow.
It’s the same with intercourse. It’s not about the penis penetrating a passive vagina. That is such an aggressive concept. It’s about the penis entering the vagina and the vagina accepting and holding the penis. The vagina needs and wants the penis as much as the penis needs and wants the vagina. Then, and only then, can the energy flow.
Different but equal. Different but complementary. Each needs the other, each matches the other, the combination makes the energy flow.