Last night (7 June), fans watched Charlotte confess to kissing her co-star Marty McKenna. On hearing the news, Gaz stormed off and chose to distance himself from Charlotte by leaving the house.
He later admitted he was "devastated" to hear Charlotte and Marty had locked lips, and it seems like he can't forgive or forget.
In a sneak peek at next week's final episode, Gary returns to the house and speaking to Charlotte he tells her: "We're done," leaving her in tears.
Gary had hinted it could be the end for him and his co-star's relationship, telling Geordie Shore's Confession Cam: "I'm actually devastated... this is how she repays me. I need to know if me and Charlotte are going to work in this house, or closure so I can move on. At the minute, that to me is closure."
Are they now really over?
Not if Charlotte can help it, she sets herself a mission to win Gary back and is seen standing on the kitchen side during the gang's house party, shouting at everyone: "F**king shut the f**k up..."
Is there a big emotional speech coming on?!
Fans have seen Charlotte and Gary's romance hotting up over the current series. When Gary returned to the house for its five year special, he made it pretty clear he was only interested in Charlotte.
The couple then agreed to officially start seeing each other, and Gary revealed he was ready to commit to Charlotte during their first proper date together.
The duo had even been talking about their future together outside of the house, with Gary telling Charlotte he wanted her to be his "girlfriend."
Following her confession, Charlotte said: "I told Gary that I kissed Marty and I'm absolutely gutted about it. I think I've ruined a good thing that we had going on. For the first time in five years, he actually wanted to be with us. He was being and treating us so nice and I went and f**ked things up for us.
"I was starting to fall head over heels for Gary again and I've just messed it all up. I hope that this all works itself out because if it doesn't, then that means me and Gary are over for ever."
Geordie Shore: Big Birthday Battle continues Tuesday 14 June at 10pm on MTV.
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