Knocked Up
(2007)

Ben (Seth Rogen) grows up. He gets a real job, a real apartment, reads the baby books, and does his best to be the man Alison (Katherine Heigl) wants to father her child. Pete (Paul Rudd) was not cheating on Debbie (Leslie Mann), and they continue to work out their differences as a married couple. Ben and Alison have the baby, and although we never see the wedding alluded to by Ben's proposal earlier in the movie, we do see the two of them raising the baby as a happy couple.

 Thanks Herbmeistr!