Another day, another never-before-seen Justice League set photo from director Zack Snyder. This time it features Ezra Miller as the Flash staring at a giant photo of Margot Robbie’s Harley Quinn.

“#tbt (throwback Thursday) to love at first sight,” Snyder captioned the photo on Vero.

Miller’s cameo as The Flash in Suicide Squad was shot by Zack Snyder on the set of Justice League. The only explanation I have for why there was a photo of Margot Robbie as Harley Quinn is because maybe they had some visuals from Suicide Squad to help them as they were shooting the cameo.

Do you have your own theory as to what’s going on in this photo? Let me know in the comments below.

Update: Suicide Squad and Justice League photographer Clay Enos explained on Vero that he made a giant test print of Margot Robbie as Harley Quinn and hung it up to take a look. Ezra Miller came over to check it out and Enos captured this candid moment.

Thanks to Batman News reader Brett for the heads up!