Do people who monkey branch always upgrade from you to someone better ?

I’ve been thinking about this and would like to gain some insight into this, I guess this comes back to the idea of attractiveness, amongst other things, such as career, safety, financial gain etc, my ex monkey branched to someone I would consider better looking than me but from a ethics and morality stand point is the bottom of the barrel as he knew about me and her and was waiting in the background. He also has a far less secure and low paid job than me as well as being a potential orbiter of other women and narcissist on his social media. Just keen to hear other people’s insights into this.