"Glee" actor Chris Colfer has opened up about his co-star Naya Rivera and her break up from Big Sean, as well as shed some light on the Naya Rivera and Lea Michele feud rumors. Did Naya Rivera and Big Sean break up and call off their engagement because of cheating?

According to WetPaint, "Glee" star Chris Colfer was on the Sway in the Morning Radio Show on July 7, and said that he knew Big Sean "very well" when he was still dating his co-star, Naya Rivera.

Sway's co-host then asked Chris if he knew anything about the rumors that Big Sean cheated on Naya Rivera with Lea Michele.

"Oh god, I don't know anything," he replied. "I would sincerely doubt that."

Sway's co-host continued to press Chris about the rumors, and asked him if he saw any evidence of Naya and Lea's rumored feud firsthand.

"I never saw any of that myself," Colfer said. "But I feel like my answer is kind of like, 'ask them.' I can't spend my whole career answering or approving or disapproving rumors."

However, Chris did admit that, just like any cast, the "Glee" actors do get into arguments here and there.

"We get into little tiny co-worker fights and sibling-type fights all the time because we are constantly around each other, that's how it is in any workplace," he responded. "But no, there's never been hairpulling or whatever."

"Glee" season 6 is expected to premiere in 2015.

As we previously reported, TMZ suggested that the Naya Rivera and Lea Michele feud started when Naya became fed up with Lea's "diva antics." Things got so bad that Naya told "Glee" producers that she was annoyed with Lea's behavior. When Lea found out, she walked off set during filming of season 5.

But TMZ also reported that Lea's sources have a different story about what happened, saying that "Lea was totally unaware of any complaints about her ... and Lea and Naya weren't even shooting scenes together." They also claim that Naya was the one who got tossed off set.

Some sources even told TMZ that Naya was fired from "Glee," but her sources say these claims are just false rumors.

FOX Network said in a statement to The Associated Press that "There is no truth to the rumor Naya has been fired from the show. She remains under contract to 'Glee.'"