Dr. Gemma Foster (played by Suranne Jones) learned that her husband Simon (Bertie Carvel) was having an affair with teen Kate Parks (Jodie Comer) and threw him out of the house in the first run.
But now, actress Suranne has hinted that their relationship is far from over as she described the new series as “dark” and “sexy”.
Speaking on The Jonathan Ross Show about what fans can expect from the second season, she teased: “It’s a different show… Mike calls it a modern western – Is this planet big enough for both of us?
“It’s very different and it’s very dark and it’s very sexy and it’s very tense.”
The 39-year-old went on to add: “Mike [Bartlett, the writer] said, ‘What about a story about two people who are divorced, who really hate each other who still have to parent a child, how do you navigate that situation?’
“You can never split up is the point. Because they did have a great relationship, there’s a lot of unresolved sexual energy and we all know if you have exes, and if you meet an ex again, when you see each other again… all those feelings.”
“I think again it’s uncomfortable…you’ve got a very uncomfortable blended family in series two,” she continued.
Opening up about how she would react if she learned her husband had been unfaithful, Suranne told host Jonathan: “I certainly wouldn’t give my husband, sorry Laurence, the opportunity for us to move on.
“Not [after] two years. He had a whole separate life going on in the show. I think I’m clean cut, if you want to be with someone else, be with someone else.”
The Jonathan Ross Show airs tonight on ITV at 9.30pm.