This is inaccurate. Corruption route is usually based on corruption points and has nothing to do with love or lust.So non-corrupt and corrupt is based on whether your love or lust points are higher than the other. More love points compared to lust points makes it a non-corrupt route. Opposite situation creates a corrupt route.
Love and lust are more linked to some kinks. Most girls will need high love to be impregnated, while high lust is usually required for anal. But that's not a rule.