Lydia’s appearance on the reality show will feature the first time the TOWIE star has seen ex-boyfriend Arg since it was revealed that he cheated on her with Amy Childs.
A source told The Mirror: ‘Lydia came down to Jess Wright and Ricky’s party on Sunday night, and she finally came face to face with Arg.’
‘The Amy thing really upset her, because she felt like she was being paranoid at the time when she suspected Arg. But now she knows her worst fears were genuine.'
‘It’s been difficult for her to think about, even though it was ages ago. They have text, but this was the first time they met up in person.’
Lydia split from Arg 2 years ago and Lydia soon started dating TOWIE co-star Tom Kilbey.
Lydia and Tom split last year and the Essex girl then decided to travel South East Asia on a long back packing holiday with her younger sister.
The source continued: ‘Arg has got his life together recently, he’s got his own house and has moved on. He hadn’t wanted Lydia to come back.’
‘But it’s also hard for Gemma [Collins], because she knows he still has feelings for Lyds.’
Lydia is reportedly set to feature in more episodes when series 12 airs later this year.