Fall Out Boy frontman having composed the music for an upcoming romantic comedy titled Mark, Mary & Some Other People.Written and directed by Hannah Marks, the film will be released in a hybrid theatrical/on-demand model on Friday November 5, after premiering earlier this year at the Tribeca Festival in New York.The film follows the tumultuous journey of a newlywed couple, Mark (played by Ben Rosenfield) and Mary (Hayley Law), experimenting with non-monogamy as their relationship grows