Caleo

Caleo is a het ship between Calypso and Leo Valdez in the The Heroes of Olympus fandom.

Fanon
This ship is relatively popular in the fandom, although some fans feel the ship is forced.

Trivia

 * The name Leo is one of the twelve zodiac signs which has fire as it's element.
 * Thalia Grace was Leo's first love interest, and she is the only one who is at least partially human. The love in question were all one-sided on Leo's part, though.
 * Calypso is the first out of four love interests to genuinely have any real romantic interest in him.
 * Leo is the only man who has ever reciprocated Calypso's affections and actually wanted a relationship with her.