Naya Rivera Dishes On Recording 'Sorry' Single With Big Sean

"He's the big dog, and I'm just a little Chihuahua trying to come up," the "Glee" star says of recording with her boyfriend.

Naya Rivera is taking a quick break from "Glee" duties to promote her debut single, "Sorry," which features G.O.O.D. music rapper and her boyfriend, Big Sean. The fizzy R&B/pop track hit digital retailers via Columbia Records on Tuesday (Sept. 17), and previews the 26-year-old's debut album, due out in 2014.

"I wrote the song at the beginning of the summer along with some other songs… and this song just felt like a really good end-of-summer song," Rivera told Billboard on Tuesday. "I wanted to get a feature on it, and it just felt like Sean's swag and his vibe would just really fit this well, and I was right."

Rivera has been working on her debut album for over two years while playing Santana Lopez on "Glee" (the news of a planned solo album was originally announced in June 2011), and says that she now runs all of her songs by Sean, who she's been publicly dating since April. After hearing "Sorry," the rapper took the track and returned with his guest spot written and recorded in two weeks.

"I think he's incredibly talented, and has a great ear," Rivera says of Sean. "He's the big dog, and I'm just a little Chihuahua trying to come up."

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The singer says that she and Sean will "definitely" be performing "Sorry" together soon, and she has continued working with Christopher "Tricky" Stewart on her still-untitled Columbia debut while searching for other collaborators to hop aboard the project. After winding down September with radio promo behind the single, Rivera will head back to filming "Glee's" fifth season, which kicks off on Sept. 26.

"I think it's obviously going to be the most touching season that we've done yet," says Rivera of the Fox dramedy, which will include a guest appearance by Demi Lovato and address the death of cast member Cory Monteith in its upcoming season. "And I think that, above all else, we'll get back to the heart of it, and where it was in season 1, where everybody fell in love with it."