Kristen Stewart and St. Vincent have been romantically linked for mere months now but it appears to be going so well they?ve decided to work together! Next month, Stewart will be making her writing and debut with the short film Come Swim in the festival circuit and her rumored girlfriend has written the project?s music. Set to premiere at the Sundance Film Festival, the story is described as ?a diptych of one man?s day, half impressionist and half realist portraits.?