Jennette McCurdy revealed the reasons why she was "jealous" of Ariana Grande while she was a Nickelodeon Star.

In her latest autobiography, "I'm Glad My Mom Died," McCurdy, 30, spoke out on the role she played in her "Sam & Cat" co-star. 

McCurdy described Grande as a "burgeoning pop star" who "regularly" missed filming.

Jennette McCurdy Reveals

As per McCurdy, Grande was absent "to go sing at award shows, record new songs, and do press for her upcoming album," and was then left to "angrily keep the fort.

Sam & Cat" was only on air for one season in 2013-2014. following the show's cancellation, Nickelodeon offered the actor $300,000.

to make her time with the network secret, McCurdy said. The offer was rejected by McCurdy.

Jennette McCurdy

McCurdy who was Sam Puckett on "iCarly," felt the same way as Grande however, she was still angry because she wasn't provided with similar opportunities, as stated by the actress.

I had two feature requests during "iCarly" that I had to decline because the 'iCarly' crew would not let me write out episodes to shoot them," she explained.

The absences of Grande were infrequent, but then she and her singer reported missing a whole week on the set.

McCurdy wrote. "So I'm supposed to turn down the movies while Ariana is playing the whistle during the Billboard Music Awards? F**k. This.

The circumstances led McCurdy to "resent being a good sport," which she was frequently praised for during the time.

If I weren't such an excellent sport at the beginning I wouldn't have been in this situation in the first in the first place.

I would not be on this show, muttering these ridiculous lines on this s**ty set sporting this sh**ty haircut," she wrote.