Woman are always attracted to “the better option” in all things, in all ways, at all times. The ones who do not act on it are suppressing it.
“You can not afford to be the average guy in the room…whether you want to admit it or not, you’re in competition [with all other guys].”
Do not get mad at women for who they are. Women have evolved to select the best possible option for a mate and if she sees a better option she will quickly drop you and move on to the new option. All you can do is be the very best version of yourself and NEVER EVER allow a women to become the center of your world. Let her know from the very start that you have no problem with walking away.
They may not necessarily the be the best or better option. Sometimes, the girl just wants variety, and just gets tired of the same shit and likes to change it up here and there. Or they really like having multiple things going on at once. Bottom line, interpreting it as you being less may not be right.
In the end, if we’re being brutally honest, it is alllllll just a numbers game. Partners are like buses; next one always comes along pretty promptly. If we’re exceedingly lucky — meaning are absolutely not — we will find genuine resonance with someone, in ways and amounts that make it all worthwhile, and with whom we would rather not be without.

The answer is Very Simple two-parts, universal —– (1) HEIGHT — (2) PHAT WALLET BULGE —– BBC study proved #1 and everyday experience proves #2