Bold indicates a Pokémon gains STAB from this move. Italics indicates a Pokémon whose evolution or alternate form receives STAB from this move.
In the game data of Pokémon Gold and Silver, Smoochum is programmed to learn Lovely Kiss as an Egg Move, but no male Pokémon that can know it are in Smoochum's Egg Group, making it impossible to pass down the move legitimately. It no longer has it as an Egg Move in Pokémon Crystal.
Jynx's lips glow pink and she kisses the opponent. Seconds later, the opponent falls asleep, or Jynx's blows a kiss at the opponent, releasing a pink heart-shaped or lip-shaped wave at the opponent. When the wave hits the opponent, it falls asleep.