Kirsten Dunst couldn’t really identify with her character in “Upside Down,” about lovers who live in parallel worlds of opposing gravity. “Usually they just come to me,” she said of her own romantic involvements here on earth.

The Millennium pic preemed March 12 at the Arclight, where writer-director Juan Solanas explained his vision: “I think in images, and I thought of two mountains facing each other, one being upside down, and then the story came.”

When asked if he’s ever gone to extremes for a loved one, co-star Jim Sturgess mused, “Of course! When you fall in love you do some dumb shit.”

Stars later collided at No Vacancy in Hollywood.