1-Even though a woman has accrued past benefits from her relationship with a man, this is no guarantee of her continuing the relationship with him.  (Translation:  What have you done for me lately?)

2-If a woman promises a man to continue her relationship with him in the future in exchange for a benefit received from him today, her promise becomes null and void as soon as the benefit is rendered.  (“I will gladly pay you Tuesday for a hamburger today.“)

3-A man’s promise of a future benefit has limited ability to secure a continuing relationship with a woman, and his promise carries weight with her only to the extent that the woman’s wait for the benefit is short and to the extent that she trusts him to keep his promise.

more information: https://www.google.com/amp/s/www.psychologytoday.com/us/blog/machiavellians-gulling-the-rubes/201610/briffaults-law-women-rule%3famp

definitely read this page thoroughly: https://en.m.wikipedia.org/wiki/Robert_Briffault

this is post is just a brief, go to sources for more and better information.