Pokémon (1997)

S03E37 Love, Totodile Style

Ash's Totodile becomes smitten with a lovely Azumarill that happens to pass by, but its attempts to win her affection go unrewarded. Just as Totodile is trying to impress her, Team Rocket swoops in and abducts the Azumarill, leaving Totodile heartbroken and determined to rescue her.