Don't ask for proof. These are facts, and facts cannot be proved, only indicated.
Women are basically psychic vampires. They are parasitic and you, men, are their hosts. Not having access to source, to life-force, to a
soul of their own, they have to seek it second-hand, from a man.
Woman, when she feels she has unriddled your riddle, gotten to your depths, and, most importantly, depleted all your life-force, will dump you, she will move on to the next host. When a man is nothing but a shell, passive, helpless, dependent, he will get dumped. This is the reason it is so completely devastating.