“Authenticity of experience, and the pitfalls of its allure, are at the heart of writer-director Emma Forrest’s debut feature “Untogether,” a tart, compelling romantic snarl about the iffy relationships a pair of tensely supportive sisters — played by real-life sibs Jemima Kirke and Lola Kirke — have with a couple of emotionally challenged men played by Jamie Dornan and Ben Mendelsohn.

A showbiz-adjacent story set in tucked-away hills of Los Angeles that become a neurosis-wallowing refuge for its quartet of characters, “Untogether” at its chill, observant best resembles what a left coast, smart-satiric-serious kind of romantic comedy might look like going forward.”

THE WRAP