Miley Cyrus & Model, Justin Gaston Done

16 year old, pop star, Miley Cyrus and her 20 year old model boyfriend, Justin Gaston, have broken up according to E! News. Cyrus ended the relationship last week as she was preparing for her new film, “The Last Song.”

A source tells Us Weekly, “They have been having trouble for a while. It’s been hard for a long time since Miley has been working so much and traveling a lot.”

That may not be the only reason, as Cyrus has been spending time with her ex, Nick Jonas. “She obviously has been hanging out with Nick again a lot and Justin was cool with it at first – as long as it was just a cool friendly thing,” a friend of Justin’s told E! News. “She didn’t cheat, but I guess Nick was trying to get her back the whole time.”

Nick and Miley have been working on a duet according to Nick's interview with Twist called "Before The Storm."

“There’s two versions of the song basically, one that was written just for our record that we sang originally. And then I played it for Miley and we realized that if we just changed the lyrics a bit, we could make it more of our story, kind of share that side of us, and it could be great. So, we did,” Nick told Twist. “She came in and she and I sat down at the piano and just worked on lyrics a bit, tweaked it up, and it turned out great!”

Miley Cyrus have tweeted about the distance between herself and her loved ones since leaving for Georgia. “Why does saying good-bye hurt so much?” she wrote on June 7. “I’m just to far from where you are, i wanna go home.”

Didn't think they would stay together.

Source: Access Hollywood