|It Had to Be You|
|Author(s)||Cecily von Ziegesar|
|Genre(s)||Young adult fiction|
|Publication date||October 2, 2007|
|Volume||12 (of 13)|
|Preceded by||Don't You Forget About Me|
|Followed by||I Will Always Love You|
Set in the eleventh grade, the prequel follows Serena and delves more into the relationships and developing love triangle between Serena, Nate and Blair. Starting just prior to Nate and Serena's sexual encounter, the novel chronicles the Upper East Siders' lives up until Serena's departure from Manhattan.