Emmerdale spoilers follow.
Emmerdale's Dawn Fletcher is gripped by the green-eyed monster next week as she struggles to watch her ex-husband Billy with his latest love interest.
Even though she dumped him for Joe Tate, Dawn can't help feeling jealous that her ex has moved on – does she want Billy back?
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"Billy deserves some happiness after what Dawn did," explains our Emmerdale spy. "His relationship with Gabby Thomas is blossoming, although there have been some teething troubles. But it seems if Dawn can't have Billy, no one can!"
Dawn's dismay becomes evident when she asks Gabby not to tell Clemmie and Lucas about the burgeoning romance, so as not to unsettle them.
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Gabby bristles at being told what to do by her boyfriend's ex, and resents Dawn calling the shots.
Despite Dawn's efforts, the cat is out of the bag when Clemmie spots Billy and Gabby smooching, leading to some awkward questions.
Clemmie quizzes Dawn, who is forced to admit Billy and Gabby are an item. Thankfully, Clemmie is breezy and is pleased that Billy has found someone else. However, the same can't be said for Dawn, who can barely conceal how much it hurts!
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Apart from Dawn's interference, there's another fly in the ointment for Billy's new relationship. Could Gabby end up jeopardising her own happiness?
"Gabby's food anxiety is spiralling," notes our source. "She even bans Thomas from attending a kid's birthday party after seeing the menu! With Dawn sticking her oar in, Gabby's battling all manner of insecurities."
Can Gabby overcome her issues before her fling with Billy breaks down?
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Emmerdale's producer Laura Shaw previously told us: "It's going to be a big story for Gabby, where we delve into the dark side of obsessive healthy eating.
"She lost Vinny and then being pushed away by Ross makes her start to become a little bit more obsessive about controlling what she eats.
"And while initially it'll just look like healthy eating, we'll see how an obsession can start to go wrong."
Emmerdale airs on weeknights at 8pm on ITV1, and streams on ITVX.
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