Robert Pattinson, Kristen Stewart, and Rupert Sanders
In the mid-2000s, Twilight actors Kristen Stewart and Robert Pattinson were universally adored as every teenager's favorite couple. The bliss lasted until 2012 when the tabloids published photos of Stewart and director Rupert Sanders sharing a kiss. The director, who had been working with Stewart on Snow White and the Huntsman, was married to model Liberty Ross at the time. The exposure of their affair did not bode well for Stewart's career at the time.
Selena Gomez, Justin Bieber, and The Weeknd
After their rollercoaster of a relationship drew to a close in October 2014, it seemed that Selena Gomez and Justin Bieber were over once and for all—but when Gomez started dating The Weeknd in January 2017, Bieber wasn't particularly thrilled. When asked by TMZ if he liked The Weeknd's music, Bieber replied, "Hell no, I can't listen to a 'The Weeknd' song."