• David Giuntoli (L) and Bitsie Tulloch attend the 'Grimm' panel during Comic-Con International 2016 held on July 23, 2016.

David Giuntoli (L) and Bitsie Tulloch attend the 'Grimm' panel during Comic-Con International 2016 held on July 23, 2016. (Photo : Getty Images/Matt Winkelmeyer)

With "Grimm" heading to its final chapter, some of the NBC series' beloved characters will be forced to make difficult decisions that will affect their lives forever. Latest spoiler news teased of Nick's (David Giuntoli) potential love triangle with Adalind (Claire Coffee) and Juliette (Bitsie Tulloch).

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When "Grimm" Season 6 aired its first episode in early January, avid viewers of the NBC supernatural series witnessed the changes in Eve's (Tulloch) personality. After being healed by the mysterious stick, the said character started to exhibit a softer side reminiscent of her normal self, Juliette, who was Nick's former love.

Given Juliette's emerging awareness, her return will complicate Nick's relationship with Adalind. In an earlier interview with TV Guide, Guintoli described the said situation as a difficult stage for the three characters.

Nick will feel conflicted especially when Juliette will own up to the mistakes that she made while she was Eve, according to the actor. However, given his "solid" relationship with Adalind, Nick will try to avoid rekindling his previous romance with Juliette.

Guintoli added, "I don't know if he can act on those impulses ... It's this unrequited thing with Juliette ... It's a very difficult emotional thing for Nick to go through."

Meanwhile, the actor also highlighted that Nick's fate as the Grimm might hinder his chance to live a happy life where he has a successful career surrounded by friends and family. Citing the warnings given by many people that included Nick's mother and aunt, the said character might be forced to choose a lonely life to keep his loved ones safe, according to Guintoli.

In other news, the upcoming "Grimm" Season 6 episode 6 will feature Nick and his friends' battle with a Wesen beast that haunts its victims at night, according to episode spoilers posted on Spoilers Guide. Titled "Breakfast in Bed," Monroe (Silas Weir Mitchell) and Rosalee (Bree Turner) will also discover an important link between the constellations and the mysterious stick with its sigil-filled cloth.

"Grimm" Season 6 episode 6 will be released on Feb. 10, Friday, on NBC. Watch a teaser clip below: