Lydia, who quit the ITV2 reality show at the end of 2012, is set to confront former flame James 'Arg' Argent over his recent cheating revelations.
In his new tell-all autobiography, Tales, Tantrums and TOWIE: Living It Arg, reality star Arg confesses that he cheated on Lydia with his co-star Amy Childs at an ITV Christmas party in 2010.
Arg admitted that he and Amy were "passionately kissing", explaining: "I got pretty drunk and found myself getting caught up in the moment. Here was the sexiest and most famous star of the show and she was lavishing her affections on me."
Now a source tells The Sun that Lydia is "seething" with Arg after finding out about his deceit and wants to seek answers.
Lydia split with Arg in December 2011 after four years together, and never found out about his secret kiss with Amy - until now. Lydia also made a brief return to the show last year for a one-off episode, in which she offered advice to best friend Lucy Mecklenburgh.
We're really hoping that she'll be back on the show, even if it is just a one-off, as a source also tells Reveal: "There will be a blast from the past tomorrow night."
As always, TOWIE producers are keeping tight-lipped about Lydia's possible return, but we're sure the final episode of series 11 will go out with a bang - we can't wait!
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