Speaking in an interview with TV Week, the actor revealed that Indigo Walker takes an instant shine to Romeo when she makes her return to Summer Bay later this month.
Mitchell told the magazine: "They meet at school. There's an attraction, because Indi's a beautiful girl, but Romeo isn't looking for a girlfriend. He's still heartbroken over Anni.
"Initially, Indi goes out of her way to see that he's okay - even though she doesn't know him, so he thinks it's nice that she cares about him. They have a lot in common, but he tells her he's not looking for romance."
Asked whether their early scenes could prove to be the start of a budding relationship, Mitchell teased: "There's nothing happening in the near future - but down the track? Possibly!"
Indigo - played by former Out of the Blue actress Samara Weaving - is returning to Home and Away along with the rest of the Walker family. They had a brief stint on the show last year.