The actor, who plays Duke Crocker on the Syfy drama, told Collider that his character will get a new love interest in a future episode.
"One of the funnest things that people are going to get to see in season two with Duke is the emergence of a love interest, in several different amalgamations," he hinted. "I'm excited about that, and getting to see Duke not quite as confident as always. "
He continued: "There's a character who comes in this season that really pushes Duke's buttons, and that's not something you got to see a lot of last year."
Balfour claimed that the cast and crew of Haven are improving on what [they] did last year".
"We learned a lot from season one," he said. "You learn what works and what doesn't, and you can carry that into the next season. That's the thing I'm hopeful for, for this season, but you never know. I'm only an actor on this show, so there's only so much influence I can have."
The Skyline star added that he is still having "so much fun" playing the morally ambiguous Duke.
"[That] was absolutely what drew me to the show," he said. "I really do love the character. I love the way that the writers write him, and the freedom that they give me to bring myself to the character. He's a ton of fun to play."
Syfy originally renewed Haven for a second season last October. Beverly Hills, 90210 star Jason Priestley, Being Erica's Vinessa Antoine and WWE star The Edge have all signed up to appear in the show.
The second season is scheduled to begin on July 15 at 10/9c on Syfy.