The two, along with Paddy's partner Rhona, are currently embroiled in a big custody battle over Leo, as Paddy and Rhona are preparing to move to New Zealand.
In a video interview on the official ITV Emmerdale site, Brunt said that Marlon's decision to reveal he is taking a court order out against the couple on their wedding night has a big impact on Paddy.
Brunt claimed: "It just crushes Paddy's world. He crumbles. It's the end of the dream for him."
However, the actor then went on to say that he genuinely wishes the pair can get back on track, saying: "I hope in the future Paddy and Marlon can find their way back to being friends again. That'd be really lovely, but they've really gone as far away from each other as they possibly can."
He added: "Underneath it all, they do love each other, and there's been plenty of tiny little moments where in the middle of rows where you can see one of them faltering and saying, 'Do I really want to be here with my best mate?'
"So there's been some really sweet little pointers that kind of suggest maybe they'll be able to get over this. They got over the whole Rhona thing... so if they got over that, hopefully they can get over this."