The reality TV duo have frequently ended up in bed together in previous series, but Charlotte has maintained in the latest run that she is happy with her current boyfriend.
However, after a significant amount of drink, Charlotte's insistence that she's over Gaz begins to crumble.
"I'm in bed, I'm just dosing off, I've had a big night and I just see this head pop round the corner. Hair all over the place, make-up all over the place, she looked the f**king grudge," says Gaz.
"Why is Charlotte crawling in my room?"
Charlotte comments: "Why I am getting into Gary's bed? Is it because it's just so familiar or is it just because I'm a slag?
"I went to Gary's room just to pretend for a second that Gary was my boyfriend."
Charlotte's co-star Vicky Pattinson says: "She's got a lad, she doesn't know what she's doing with that. I don't know why she wants to crawl into bed with that c**k. I thought that was done and dusted. Shop closed. Obviously not."
Geordie Shore continues tonight (November 20) at 10pm on MTV.