From the producers of Notting Hill and Bridget Jones's Diary, the film is America's first no sex comedy and is a story about love, giving up sex, trying to hold on and hoping that love will hold out.

Hartnett stars as Matt Sullivan whose last big relationship ended so disastrously that his heart's been aching ever since and his ability to commit has been seriously lacking. Then comes Lent, that time of year when everyone gives up something. That's when Matt, a guy who's never been able to finish anything, decides to go where no man's gone before and make a vow of no sex for 40 straight days.

At first he has everything under control – but then the woman of his dreams, Erica (Sossamon) walks into his life. Sexy and spirited, Erica drives Matt wild. Now, with everyone betting he won't finish what he started, he's just trying to hold on, and hoping she's willing to hold out...