AceShowbiz -

Rita Ora opened up about why she couldn't perform at Teen Choice Awards over the weekend. In an interview with Ryan Seacrest for his radio show, the singer said Calvin Harris, whom she split from this June, nixed her scheduled performance.

Ora was initially set to sing "I Will Never Let You Down". "For anybody who doesn't understand how it works, he wrote and produced the song, so he has to approve anything TV-wise," she explained. "He owns the rights to it and he didn't approve the Teen Choice Awards."

While she was not surprised by her former boyfriend's move, she admitted that she was disappointed she couldn't sing at the TCAs because it would have been "awesome." She said, "I could have got told a few weeks earlier, you know. That would have been nice."

Rehearsing a month prior to the event, she added, "We put so much work and money into the show. I put my own money into the performance, like I always do, and I guess it's just one of those things. Everything happens for a reason. That's how I look at it."

"It was a last-minute change, but you know what, it happens and we move on and move forward… It is what it is, man. You know, you write a song with somebody, and I guess there's some stuff that comes with it."