That’s generally advice for single women. If your man treats you well and you are happy with him I would stay. Your standards for how you are treated should be as good as you deserve (that being with love and respect) and your standards for looks are up to you. If you are thinking of breaking up with him bc he isn’t tall enough then ovi that’s dumb but if u want to bc he doesn’t treat you well then that’s valid and you should do it