Essex fans watched last night as all three girls claimed the ladies' man had made advances at them, with Jessica insisting that Mario got flirty a year ago despite her being in a relationship with Ricky Rayment.
Following the finale episode of the ITVBe reality series, Mario took to Twitter and denied Jess, Chloe and Lauren's claims by writing a letter for his fans.
Now, even Mario's mum Kim has waded in to the row. Taking to Twitter, she accused her son's castmates of "trying to bring him down".
Clearly fuming, Kim tweeted: "Oh here we go again!!! These 3 women - all trying their hardest to bring my son down once more! Same old, same old TOWIE! X"
Oh here we go again!!! These 3 women - all trying their hardest to bring my son down once more! Same old, same old TOWIE! X— Kim Falcone (@kim_falcone) November 12, 2014
The shock allegations first emerged during a scene between Jessica and Bobby Norris. After telling Bobby that Mario had made a pass at her last year, she then claimed he had commented, "Does that mean Jess is single now?" following her split with Ricky.
Later in the show, Chloe told Jessica and Lauren that Mario had been to visit her with flowers following her break-up with Elliott Wright. The star said she appreciated the gesture but felt he may have been flirting with her.
Lauren then piped up and claimed Mario had recently questioned why she's wasting her time with a certain guy she is seeing - believed to be former TOWIE star Kirk Norcross.
Alongside his letter, Mario hit back on Twitter: "2 girls I have in the past been with and broken up with and 1 that just broke up with my friend.. 3 people that have decided to attack me ha."
Did you enjoy this series of TOWIE? Tell us below, as the best comment from across the website each week wins £50!