The recent "Pretty Little Liars" Season 6B promos have not given any concrete evidence on the relationship status between Spencer and Toby, and Hanna and Caleb. And there might be a very disturbing reason behind it.

On Friday, a new promo for the "Pretty Little Liars" Season 6B Winter Premiere surfaced online. Within the promo, fans can catch a brief moment that appears to be Toby punching Caleb.

"Do I dare make the leap that a Caleb-Spencer hookup could be in the cards?" theorized TVLine contributor Andy Swift.

For some "Pretty Little Liars" fans, this would not come as a shock.

"I've had a feeling for a long time this might happen," wrote Wooster182. "They've always had an underlying chemistry and Spencer has some boundary issues."

But if you're worried about the major couples in "Pretty Little Liars," executive producer Marlene King promises a happy ending will forthcoming, just not quite yet.

"It's been a long ride," she tweeted. "Soon to be seven years. We all deserve a happy ending. But the road still needs travelled."

But Spencer and Hanna are not the only Liars whose relationships have evolved. According to Celeb Dirty Laundry, actor Roberto Aguire has joined the cast for Season 6B as Liam Greene, an editorial assistant from Boston.

Given that Lucy Hale has confirmed that Aria Montgomery is no longer with Ezra Fitz, it is speculated that Liam will serve as Aria's new love interest moving forward.