Cute Charm is an ability introduced in Generation III. So far, 7 Pokémon have this ability.
Infatuated Pokémon have a 50% chance of being
immobilized by love each turn and unable to attack.
Outside of battle
If a Pokémon with Cute Charm is the leading party Pokémon (even if fainted), there is a 66.7% chance that the game will force an encountered Pokémon to be the opposite gender to the Pokémon with Cute Charm if it can be that gender.
Pokémon with Cute Charm