The lover of life makes the whole world into his family, just as the lover of the fair sex creates his from all the lovely women he has found, from those that could be found, and those who are impossible to find.
There exists, between people in love, a kind of capital held by each. This is not just a stock of affects or pleasure, but also the possibility of playing double or quits with the share you hold in the other's heart.
A man can go from being a lover to being a stranger in three moves flat but a woman under the guise of friendship will engage in acts of duplicity which come to light very much later. There are different species of self-justification.