Robin Tunney, Simon Baker Robin Tunney, Simon Baker

The moment Mentalist fans have been waiting for for six seasons has arrived. Will Patrick Jane (Simon Baker) and Teresa Lisbon's (Robin Tunney) professional partnership finally turn into something more on Sunday's season finale?

Well ... that's up to Lisbon to decide. Her options: Accompany new boyfriend Marcus Pike (Pedro Pascal) to Washington, D.C. and accept his marriage proposal, or stay behind with Jane, who hasn't exactly tried to sweep her off her feet.

"It's a big decision," Tunney tells "There's somebody who's sort of declaring themselves, and I think there's something really flattering about that. ... That's there on the table and it's real. [Should she be] holding off on that for something that's sort of not real and you're sort of wondering if it's been an imagined thing, or one-sided? I've been inviting Jane to declare himself and he hasn't."

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That will all change in Sunday's finale (10/9c, CBS). Faced with a do-or-die moment, Jane arranges a romantic dinner for himself and Lisbon. But it unfortunately gets derailed thanks to Abbott (Rockmond Dunbar) and Cho (Tim Kang). See a sneak peek, exclusive to, below:  

But is the gesture too little, too late? In last week's episode, Lisbon told Pike that she was taking the job offer in D.C. However, she neglected to share the news with Jane.

"There's something very valuable in the friendship they have, which is sort of based on silence, and not speaking," creator Bruno Heller says. "Certainly for Jane, there was something comforting and secure about a relationship in which he didn't have to reveal himself. ... If you haven't swum for a long time, getting in the water seems like a huge step. And protecting yourself as he has been doing becomes its own end."

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Adds Baker: "The most effective way to illustrate the idea of getting back into being a human again, is giving yourself to another person, or making yourself vulnerable to another person. And I think [Jane's] obviously really afraid of doing that. He's had this kind of relationship with Lisbon — you could call it a flirtation of sorts over the years, and a comfort and a confidence. But to actually declare himself to her is a major step of getting back into the real world and being human again. I think that's the problem. He's afraid of, what does that mean? Does everything change?"

Before CBS officially announced that The Mentalist will indeed be back for a seventh season, Heller told that he intentionally wrote a Season 6 ending that would provide closure to the Lisbon-Jane storyline, but also "opens up all kinds of new possibilities" for the characters.

"I think the fans will think of it as a very satisfying finale," Heller says. "We're very happy with where we've taken them."

Do you hope Lisbon and Jane get together in Sunday's season finale?

The Mentalist finale airs Sunday at 10/9c on CBS. Catch up on previous episodes here, and see why the episode is one of our Watch This Tonight editors' picks below:

(Full disclosure: is owned by CBS.)