The pair used to room together before James and Cooper pal Julia Carey got engaged last year. Their friendship is reported to have started while both starred in The History Boys.
It’s rumored that Cooper is in the running along with Mat Horne for role of Best Man in Corden’s upcoming nuptials. Corden + Horne know each other, of course, from the sketch comedy show Horne & Corden as well as the more famous, Gavin & Stacey.