Banana Split is a 2018 American comedy film directed by Benjamin Kasulke and starring Hannah Marks (who co-wrote the screenplay), Liana Liberato and Dylan Sprouse. It is Kasulke's feature-length directorial debut.

Over the course of a summer, two teenage girls develop the perfect kindred spirit friendship, with one big problem: one of them is dating the other's ex.

April, dating the egregiously hot Nick who breaks up with her at the end of the senior year. So begins April’s summer of misery, which seems complete when she learns, from Insta-stalking Nick, that he is now dating gorgeous Clara . A drunken confrontation between the two women has a weird cathartic outcome: they secretly become best friends, and it’s almost as if both of them are cheating on Nick – with each other.

Hannah Marks as April

Liana Liberato as Clara

Dylan Sprouse as Nick

Luke Spencer Roberts as Ben

Meagan Kimberly Smith as Molly

Haley Ramm as Sally

Jessica Hecht as Susan

Addison Riecke as Agnes

Jacob Batalon as Jacob