Thotslayer

Those who take on this feat have advantage resisting seduction attempts as well as resistance to aphrodisiac potions and poisons as well as seduction and charming magic. Users also gain advantage on attacks against succubi and other carnally-oriented opponents. 

Users can roll insight at advantage to discern if any individual within perceptible range is sexually active and/or perpetrating adultery. identified 'thots' acquire penalty on sex-related bluffs(-6) and seduction(-9) rolls, as well as disadvantage on saving throws in combat against the Thotslayer.