Their marriage ended last year, and the makeup artist is determined to move on from the Britains Got Talent presenter by piling on the work and living her best life.
The 42-year-old is set to be working on The Strong Girls Club – a show that will help women get back on their feet after a break up.
A source close to her told CelebsNow: Lisas determined to move on. She has literally shed the skin of her marriage and is now focusing on her future.
Lisas got so much going on and shes realised that it might not have transpired if she was still married. In Lisas mind, this is a fresh start for her career.
The insider revealed Lisa was upset over new images of Ant and his new girlfriend Anne-Marie Corbett looking loved up as they pushed a pram together.
Lisa just wants to spread her wings and step out of Ants shadow, they added.
She landed a new job recently as a make-up artist on Towie after being axed from Britains Got Talent, where she worked for 12 years.
And she has truly thrown herself into her work life and plans to fly to Los Angeles to explore career options.
Lisa is juggling a few balls in the air, including a collaboration with Avon UK, and a new dating show called The Updaters, which gives contestants makeovers before they go on their date.
Ant and his girlfriend and former PA Anne-Marie were spotted earlier this week in what appeared to be diamond shopping.
The pair are reportedly very happy together, and Anne-Marie is reported to have moved in with him.