I get all the it's just your turn, she's not really yours.

But isn't that a way of hamstering yourself?

How do you actually keep a girl? Not that one girl, a girl. Assuming you have red pill qualities, improving yourself, good sex, and vet her well before hand (plate or fwb before gf), then you technically shouldn't have a problem right?

Or will she always leave you for someone hotter, more charming, etc?

So how do you prevent that?