40 Days and 40 Nights (2002)

In "40 Days and 40 Nights", a young man named Matt Sullivan, played by Josh Hartnett, vows to abstain from all sexual activity for Lent. As he struggles to keep this promise, he meets and falls for a woman named Erica, portrayed by Shannyn Sossamon. The main conflict arises as Matt tries to navigate his feelings for Erica while sticking to his commitment, leading to comical and challenging situations.