Last week, it was teased Marnie and Aaron don't see eye-to-eye, but many had thought it was because of returning housemate Ricci Guarnaccio.
Tonight will see Ricci make his comeback to the house and ahead of his return, Charlotte and Gary had teased that her 'tries it on' with Marnie. That led many to presume he was the reason behind Marnie and Aaron coming to blows, but it turns out it is actually because of Marnie's fight with Marty.
In a sneak peek video shared by MTV, Aaron was seen smashing up the house, after clashing with Marnie. Ricci was then sat on the sofa and quipped: "That's like World War Three." - Hence why everybody thought he was involved.
However, Marnie and Aaron's fallout stems from an argument she has with Marty.
Marnie and Marty are discussing Chloe Ferry's kiss with Daniel Thomas-Tuck and she wants to give him some advice. She tells Marty to be the bigger person and pretend that Chloe and Dan tashing on doesn't bother him - even if he and Chloe had been growing closer.
Although, that doesn't go down too well with Marty and he tells Marnie he "doesn't give a f**k about her." He then calls Marnie a "f**king divvy" and she kicks off - leading Aaron to step in and try and stop things from escalating.
When he doesn't stick up for her, Marnie sees red. Aaron holds Marnie back, but she tells him to "get away" from her. Marnie says: "Don't let him say that. You can f**k off as well. I'm hitting you because you are nothing. Get away from us."
Aaron then tries to apologise to Marnie, but again she tells him to leave him alone and he starts to smash up the house.
She then tells her cousin Sophie Kasaei: "There's only one reason for that becuase he knows he's embarrassed himself. He didn't stick up for his bird. I've got no sympathy."
What does this mean for the couple?
Things had been going well for Aaron and Marnie on the show lately. So much so, that the pair finally had sex after dating for two years on and off, and Aaron revealed he definitely sees a future with Marnie.
"I don't think Marnie realises how much I adore her," he admitted. "That girl has got 100 percent my attention... We've been through so much in the past, but for a change it's going a step in the right direction."
Geordie Shore: Big Birthday Battle continues tonight Tuesday 24 May at 10pm on MTV.
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