Jennifer Lopez and Alex Rodriguez have been going strong for a minute now, flaunting their love on the cover of magazines and red carpets everywhere. From the numerous interviews of the duo, it seems like their love is unbreakable and they are on their way to an engagement very soon. 

During Jennifer's recent visit to Jimmy Kimmel Live, however, the 48-year-old mother of two revealed the one thing that may end their relationship. The singer was eager to share with the audience that she ran track in high school and has tons of trophies to prove it. She then explained how she and A-Rod work out together and she can't help but feel super competitive.

“I’m so competitive [in] every way. I don’t know, something inside me, I’m competitive. When we work out I think, ‘I can beat you,’” she said of her man. “We never challenge each other side-by-side. Like, if we go to UCLA, and we’re doing the stairs or something, in my mind, I’m like, ‘I’m killing it.’”

“Here’s the thing, he just doesn’t even entertain my delusions,” she explained. “Like, I’ll say, ‘Babe, I feel like I could beat you.’ And he’s like [straight-faced]. There’s no winning that because if he beats me, it’s over!” she added with a laugh.

Watch the full video below.