She saw.

Kissing his assistant as she came to pick him up.

In that second, she vowed to humiliate him and get revenge.

Humiliated as he slept in bed sheets stained and wet with other men's cum.

Humiliated by when they went out, she smelt of other men's sex on her for all to take in.

Humiliated that when she did let him fuck her, it was sloppy seconds, or thirds to remind him.

Humiliated because of one kiss.

A new world was opened up. One where she fucked who she liked, and he could do nothing about it.

Revenge was sweet.