2013 was not the time for these lovers! From Rob Pattinson and Kristen Stewart to Justin Bieber and Selena Gomez, see which Hollywood relationships didn't make it through to 2014 in our gallery!
Zachary Quinto and Jonathan Groff
Dating since September 2012, the actor and Glee star broke up in July 2013 after their work schedules got the best of tier relationship. "Zach being away and filming was not easy on them," a source explained. "They really loved each other, so it wasn't an easy split." Added another, "It just ran its course."