Zac Efron, Michael B. Jordan, Miles Teller and Mackenzie Davis were all born in the same year.

The screenplay for this film was featured in the 2010 Blacklist; a list of the "most liked" unmade scripts of the year.

Is also known as "Are We Officially Dating?" in Australia and Indonesia.

The premise was inspired by Shakespeare's "Love's Labour Lost".

Michael B. Jordan and Miles Teller would later work together again in Fantastic Four (2015).

Zac Efron and Imogen Poots worked together in Me and Orson Welles (2008), but only one scene.

Deborah Ann Woll was originally attached to role of Vera.

In the dialogue at the bar and later at the reading, Jason, Zac Efron's character, mocks the young man about to hit on Imogen Poots by saying "they will drive UP to the Hamptons". From NYC which is where all of the characters live, you typically say "drive OUT" to the Hamptons not UP. The eastern end of Long Island is east of NYC, not north of it.

The Ben & Jerry's Flavor that Zac Efron brings to his friend's apartment is Peanut Butter Cup.

In the scene where Miles Teller's character makes a penis joke and then laughs into his coffee was a real reaction from him, claiming "It was comical because my joke just wasn't that funny and everyone knew it. That's what made me break... the dead awkward silence."

Jason pretends to read as he talks to Ellie about when they first met to soften her heart to give him a second chance. Zac Efron does this type of move in another movie, playing a young Mike O'Donnell in 17 Again.

As evidenced by Mikey checking out her Facebook page, Glasses Girl's real name is revealed to be Sophie Parker. Also as evidenced by their Facebook pages, Vera and Ellie's last names are revealed to be Walker and Andrews respectively.