Jordin Sparks weight loss was reportedly made possible thanks to her ex-boyfriend, Jason Derulo. The "American Idol" lost whopping 50 pounds during her three year relationship with Derulo. How exactly did she manage to do it? Plus, all the latest on the reason behind the couples' split.

Before reports of the split between Jordin Sparks and Jason Derulo ruled headlines, a lot were talking about Jordin Sparks' weight loss. From being a 200 pound beauty, Jordin Sparks lost 50 pounds in just 18 months and managed to maintain a weight of 150.

However, Jordin Sparks's weight loss wasn't done all on her own. In a segment with "Love Your Selfie," the 24-year old star talked about what pushed her to lose weight and start being healthy.

"I had gotten really sick. And I was about to celebrate my birthday and I was like: " should be in the prime of my life right now. I shouldn't be feeling like this. I really need to make my health a priority. I was comfortable with how I looked before, but it was about really focusing on become healthier. And then my body changed, which was awesome. But it wasn't about being a size zero, or anything like that," stated Jordin.

Yet, there was a secret ingredient to Jordin Sparks' weight loss and it was none other than Jason Derulo. Sparks had taken to Instagram to post a photo of her and Derulo at the gym with the caption: "best workout buddy."

Jordin Sparks' weight loss was made possible by Derulo pushing her to go harder in her workouts. Yet, the time spent in the gym during their three year relationship wasn't enough to keep them together for longer. The couple had split late in September with countless reports claiming Derulo had cheated on Jordin Sparks.