Bubbline

Bubbline is the femslash ship between Marceline Abadeer and Princess Bubblegum from the Adventure Time fandom.

Fandom
AO3

Trivia

 * The reason Marceline and Princess Bubblegum broke up is because Bubblegum distanced herself by dedicating herself to her work over everything else. This was revealed in episode "The Varmints".