Here's what we know:
* They're close friends and partners: Kitty and Dudley work together constantly, putting their lives on the line to save the city. This shared experience creates a deep bond and mutual respect.
* They playfully tease each other: Their interactions often involve banter and lighthearted teasing. This suggests a comfortable familiarity and a certain level of affection.
* There are hints of possible romantic interest: There are episodes where Kitty seems to be attracted to Dudley's bravery or acts of kindness, and Dudley sometimes shows clumsily romantic tendencies.
* The show is primarily focused on adventure and comedy: The creators likely prioritized the action and humor over developing a full-blown romantic subplot.
Ultimately, the show leaves the interpretation to the viewers. Some fans might see their relationship as purely platonic, while others might see hints of romantic tension. The creators intentionally leave it open for interpretation.