Paddy's plans to move to New Zealand with partner Rhona (Zoe Henry) for two years are currently being threatened by Marlon Dingle, as the pub chef does not want his young son Leo to be taken away from him.
Speaking on This Morning today (August 9), Brunt confirmed that Paddy's friendship with Marlon will continue to be severely tested in the coming weeks.
Pictured: Dominic Brunt on This Morning.
Brunt explained: "I think it's going to get worse before it gets better. It gets very, very dark, and that's great to play.
"You get the scripts sometimes and say, 'Oh, Paddy wouldn't do that - he's a nice chap'. But actually, you think, 'I'm going to play this, see how dark we can get it, and then pull him out the other end'. They love each other and eventually I think it will come good."
The actor admitted that it has been enjoyable to film so many heated scenes with Mark Charnock, who plays Marlon.
He said: "It's superb drama. We've been screaming and shouting at each other for days - it's great. It's brilliant, as it's a right good release. You can walk out completely calm, because you've been screaming and shouting all day!"
Emmerdale airs a double bill at 7pm and 8pm this evening (August 9) as Paddy and Rhona's wedding day arrives.