Lydia confesses all to her mum Debbie, Jessica Wright and her mum Carol, explaining that she misses Arg following the time they spent together in Alicante, Spain for Leah Wright's wedding.
But while a tearful Lydia discusses her feelings, Arg is secretly plotting a way to win her back!
Earlier in the day, Arg meets up with Billie Faiers and her baby daughter Nelly, where he lets Billie in on his secret to woo Lydia.
Will Arg's plan work as intended? And will Lydia give in to his advances?!
In the last episode (27 July), Arg revealed that Lydia was no longer speaking to him after allegations surfaced that he had a threesome during their relationship three years ago.
With the debut of Lydia's older sister Georgia, Arg faced backlash, as Georgia was openly against Lydia and Arg's reconciliation, even saying that it made her feel sick when Lydia spoke about sleeping with him.
After the show, Lydia even revealed that she's "best off" not having Arg in her life. "When he is in my life it's more complicated and stressful and I get hurt and upset," she said.
Just a week prior to that, things appeared to be going well for Arg and Lydia, as they grew closer together at Leah's Spanish wedding.
However, Arg was left heartbroken when Lydia explained she wasn't ready for a relationship, saying that their recent "whirlwind" had got too much for her.
With TOWIE's 12th series coming to an end tonight, will Lydia and Arg be able to give their romance one last chance?
The final episode in the current series of The Only Way Is Essex airs tonight (Wednesday 30 July) on ITV2 at 10pm.
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