Cute Charm is an ability introduced in generation 3.
15 Pokémon can have this ability, such as Clefairy, Clefable, Jigglypuff, Wigglytuff and Cleffa. For 2 of them it is the hidden ability, usually obtained from events, raids or breeding.
Official effect
Has a 30% chance of infatuating attacking Pokémon on contact.