#5: Justin Bieber and Selena Gomez

Duration of Relationship: On and off for 8 years (2010–2018)

The breakup between Justin Bieber and Selena Gomez ended one of Hollywood’s most talked-about young romances. After dating on and off from 2010 to 2018, their relationship was filled with ups and downs, public reconciliations, and emotional turmoil.

Their final split was reportedly due to trust issues and the pressures of fame, with both struggling to balance their careers and personal lives. Gomez later opened up about the emotional toll of the relationship, describing it as “toxic” at times, while Bieber moved on and eventually married Hailey Baldwin.