The pair have exchanged a multitude of swipes on social media and through the press including Marnie branding Gaz the "loneliest person" she's ever met, and slamming him for what happened with ex-girlfriend Charlotte Crosby. She told The Sun: "Gary is just a bit of a d**k and I don't think she will ever lower herself and degrade herself to go back there."
Gaz, meanwhile, has said Marnie is "boring as f**k" without a drink in her, and hit out at her claims Geordie Shore needed more fit, young men as Gaz and Aaron Chalmers are "old, boring and full of s**t."
He hit back: "Marnie asking for a fresh cast with some new boys is pretty ridiculous. Maybe she just wants some newbies because me and Aaron Chalmers have both been through her like a train."
Gary and Marnie previously hooked up on Geordie Shore.
That being said, in his brand new column for Daily Star, Gaz, 28, said that whatever happened between him and Marnie, 24, they would always be friends.
"We are like a family. If we argue that's how we feel in that moment," he wrote. "Me and Marnie will always be mates, so yes, we might argue but we will always bounce back to being mates."
Mates, however, that may not watch each other's TV shows! Marnie has said she won't tune in to Ex On The Beach 5, starring Gaz, as she doesn't agree with what Gaz "did behind Charlotte's back" on the show.
She wrote in her Star magazine column: "It's the last thing I'd ever want to watch. After everything Gaz Beadle did behind Charlotte's back on the show earlier this year... I can safely say I will not be watching. I knew the pain she was going throughout back in the UK."
Charlotte and Gaz had been dating before he flew to Thailand to film EOTB, which airs on MTV in August. While he was away, she was hospitalised with an ectopic pregnancy and required emergency surgery. While recovering, she says she found out he'd slept with someone else in Thailand. Gaz, however, has said neither he nor Charlotte had made it official and he had offered to fly home to be with her but she told him to remain and finish the show.
Marnie, meanwhile, is rumoured to be entering the Celebrity Big Brother house on Thursday night. If she does, no doubt Gaz will have PLENTY to say in his next column, as he told readers: "Next week, I'll be dissecting the Celeb Big Brother line-up, or at least the ones I recognise."
We can't wait!
Fancy winning some GREAT prizes? Check out Reveal Competitions here!