The X Factor judge is said to have "begged" former boyfriend Jody Latham, who used to star in the Channel 4 show, to speak to producers about offering her a part in the final series.
"Tulisa is a massive fan of Shameless. She asked Jody if he could get her a role," a source told The Sun.
"He asked the producers, but they weren't keen and said no."
Latham was apparently "gutted and devastated" when Tulisa recently dumped him and began dating footballer Danny Simpson.
He returns as Phillip 'Lip' Gallagher for the final series of Shameless and was recently spotted filming scenes for the show, which will end next year.
Latham, who pleaded guilty to growing cannabis worth £14,000 earlier this month, plays Tulisa's on-screen boyfriend in the video for her new single 'Sight of You'. Watch the clip below: