A GUY THING (2003)
Directed by Chris Koch
Written by Greg Glienna (story), Greg Glienna (screenplay)
Starring Jason Lee, Julia Stiles, Selma Blair
When he wakes up the morning after his bachelor party in bed with a strange woman, a man presumes he must have cheated on his fiancée. Guilt leads him to try to cover it up in the week before the wedding, high jinks ensue.