If your partner is number 7, do not try to make him speak when he does not want to.
You must respect his silent moments and the fact that he is focused on himself, meditating.
He is very observant, especially of human beings. He likes to study reactions, and he will always know people's weak side.
He is very arrogant as he feels he always knows everything, and that he is the owner of the truth. Do not try to persuade him by arguing as he will not change his own ideas which are normally the result of a detailed and silent analysis.
At times he may feel he is a misunderstood philosopher, and he will foresee some facts, thus surprising you.
In a subtle manner you should make him avoid being in extreme loneliness. Because if you allow him to remain by himself, you will be next to a hermit who will refuse to have guests, to see people.
You cannot torture him by wanting him to be a "public relations" and fill the house with friends; however, you must persuade him to get out and about from time to time.
With him you will be able to talk about metaphysics, the enigmas of human beings and civilizations because if he has the chance, he will be an expert in Life Mysteries.