As quantum physics has shown there is no separation between you and your environment. We breathe air that millions of other people and plants have used for sustanance. Here again we are tught the duality of life. I am you. We get this lesson with sex and we get this lesson with pregnancy.
Pregnancy clearly shows how connection is our original condition of existence.
Again the question who are you really is answered by connection. I am you. You are me. Receiving what we need. During sex women also need to receive.