'Pretty Little Liars' Ian Harding on the premiere: Mr. Fitz and Noel Kahn 'get pretty heated'

When we last left Mr. Ezra Fitz and his high school honey Aria on "Pretty Little Liars," Ezra had decided, as star Ian Harding tells Zap2it, to "stop flip-flopping around" and was "gung ho" about his relationship with Aria.

But then someone wrote "I see you" on the back of their car window. And that someone turns out to be none other than "good ol' Mr. Kahn." And everything seems to be OK, until ...

"Everything seems to be cool until Mr. Kahn wants me to do a few things for him, which just sets up a whole slew of juiciness that happens," Harding teases. "From other shows that you will be tuning into and see, it will get pretty heated."

We're hoping for a big fight scene.

Brant Daugherty, the aforementioned Mr. Kahn on the show, previously told us that he was going to become "a thorn in Ezra's side." And Harding teases to us that the resolution should be pretty juicy.

"Let's just say that Brant and I have several one-on-one scenes. A nice of mix of [confrontational and relaxed]. I don't pull a gun on him," laughs Harding. "We fight with words. It's a lot of fun, it's a great time to play with Brant.

"You know that this is going to be a problem. It's just how it gets solved that is going to be fantastic to watch," Harding continues. "He is a thorn in my side, but how everything gets dealt with is going to be nice."

"Pretty Little Liars" airs Monday nights at 8 ET on ABC Family.