Sparks (2017)

After her plus 1 stands her up at a rehearsal dinner, a neurotic young wedding guest flees the venue in embarrassment, and has a serendipitous run-in with an ex. This impromptu reunion leads to a spontaneous, romantic, adventure through the streets of Los Angeles, and the hope that the passage of time can mend a rift between two people who couldn't figure it out the first time.