Something about what we call "personal".

In the life of every human being there is something that should be described as "personal". Not because a person feels too shy about it he (I will further say "he" meaning "a human being in general, male or female") doesn't want to make it public. And also, not because a person is afraid to dishonor oneself he doesn't want to talk about things in his life that he considers as personal. It is because that these are such things that can be understood only in the context of what can be known by the only one to whom these personal things are related.

The same considerations can be applied to what can be called "interpersonal", "only between me and you". For example, sexual relations, heart-to-heart talks... And, of course, nobody who respects oneself will have such relations with people he doesn't respect.

And here's one more notice: the notice that regards drinking. It's known by the many that alcohol destroys the interpersonal barriers between people who drink together: they start looking not only into each other's eyes, but into each other's souls.

And this too can be looked at as some kind of a more intimate interpersonal communication, and, like in case of sexual relationship, not only at conscious, but also at subconscious level (except that at physical level there is not that much communication).

This reasoning can be taken into account in event that somebody says "I won't drink with him|her".

By the way, it is interesting to notice that drinking alone is looked at as masturbating under the blanket.