Are Zac Efron and Halston Sage dating? Relationship rumors have been swirling since Halston and her Glee star boyfriend Chord Overstreet called it quits, but we have no idea if they’re together or not — and apparently, neither does Halston.

When Entertainment Tonight caught up with Halston at the premiere of Neighbors in LA and asked her whether or not she’s dating her co-star from the movie. Halston’s response? “I don’t know!”

Um, we’re pretty sure if you’re dating someone, you know. But Halston was obviously trying to play coy. It’s fine — from years of trying to decode celeb dating drama, experience dictates that an “I don’t know” means “definitely yes.”

Sources close to the possible new couple say that not only are they together, but it’s been a long time coming.

“They are definitely an item,” the insider tells E! News. “They were seeing each other a bit during filming of their movie together and ever since he went to rehab they got a lot closer. Her friends love him and say he is so sweet. He’s really good to her.”

If Halston and Zac are together, we’re so happy for them! Happy in a way that also means that we’re sad that Zac Efron may no longer be single, of course.

Source: E! News, Entertainment Tonight on Instagram