To find out what really happened between Nicole Richie and Brody Jenner, we're going to have to throw it back to the serial reality star's time on the MTV reality show "The Hills." As you may remember, the series strongly hinted he had a romance going on with star Lauren "LC" Conrad (though Conrad and Jenner have since confessed much of their romantic relationship was manipulated for the show) and that was something their co-star Spencer Pratt was keen to keep going. In fact, Pratt claimed it was actually him who was behind Jenner calling things off with Richie because he wanted Jenner to embark on the showmance.

"I talked Brody into breaking up with Nicole Richie to fake double-date with LC," Pratt claimed on "Call Her Daddy" in June of his plan to get the show publicity. "[It was] like, 'Let me help make your life better by bringing the best-looking guy in Hollywood right now, who all the girls want to date — I'll get him to break up with his celebrity, superstar girlfriend. I will get him to come on your show, pretend to be your interest ... everyone wins.'"

Richie and Jenner had reportedly known each other since they were kids growing up in Hollywood (both have famous parents in Lionel Richie and Caitlyn Jenner) and started dating around 2006. But despite Pratt's claims, there's been conflicting reports about what inspired this split.