Charley Webb and Matthew Wolfenden will try for another baby next year.
The "Emmerdale" stars - who play Debbie Dingle and David Metcalfe in the long-running soap - already have Buster, seven, and Bowie, two, together but would love to add another little one to their brood - preferably a girl - at some point in 2018.
Matthew, 37, told OK! magazine: "We'll start thinking about having another baby next year. We'd love a girl but I think we're destined to have a house full of boys."
The couple - who got together in 2009 and engaged later that year - spend a lot of time together as they live together and work together and, although bosses would like to see their alter egos get together, they've refused to have too many scenes together.
Matthew said: "They wouldn't be! They once told us they were considering it and we were the first to ring up and ask for it not to happen!"
Charley added: "It's too much - living with each other, working with each other and then being romantically linked in the show. Also, they are characters who wouldn't suit."
And they enjoy working on the show so much that they're keen to stay on there for ever.
The hunk said: "I can see me being at Emmerdale for the rest of my career."
Charley, 29, added: "You do sometimes think about wanting to play a different character but I'm fine as I am at the moment.
"I get to go home to Buster and Bowie each night and you can't put a price on that. There's no job more important than being with your family."