Associated people:
Kristen Bell
Russell Brand
Jonah Hill
Mila Kunis
Paul Rudd
Jason Segel
Nicholas Stoller
​Forgetting Sarah Marshall (2008)
Similar films:
The 40-Year-Old Virgin (2005)
The Five-Year Engagement (2012)
Get Him to the Greek (2010)
I Love You, Man (2009)
Knocked Up (2007)
Role Models (2008)
Barely helpful plot summary:
Jonah Hill not so subtly stalks Aldous Snow while the singer carries on living his casual life. Also, breakups.