Margot Robbie, Colin Farrell on a ‘Hot’ Harley Quinn-Penguin Crossover

The chemistry between Margot Robbie and Colin Farrell in Kogonada’s romantic fantasy “A Big Bold Beautiful Journey” is fire.

“I suspected we would have chemistry, but you never know until you’re actually acting,” Robbie told me Thursday while she and Farrell promoted the movie at the Four Seasons in Beverly Hills. “But I had a suspicion it would work.”

The actors play Sarah and David, two strangers who meet after renting cars from a mysterious rental agency. As they follow directions from a talking GPS, they walk through multiple doorways that take them back in time to their childhoods to relive pivotal moments that shaped their current adult lives.

“I’ve heard the most extraordinary things about [Robbie] through the years from the people that have worked with you both in front of and behind the camera,” Farrell said, adding, “They said she’s a mensch…She’s the loveliest person, she’s fun. She’s obviously a brilliant actress, but they didn’t say that because that is stating the obvious, and the other stuff I didn’t know, and all of it was very true and then some. It was a joy every day to be on the set with her. She’s so smart, she’s so brilliant, but she’s just kind and fun.”

Robbie did an unofficial casual background check on Farrell. “A lot of my closest girlfriends are crew members…Two of my closest girlfriends worked with you on ‘Fantastic Beasts.’ They were ADs,” Robbie said. “And they were always like, ‘He’s the best, the kindest.’ They just spoke so highly of you.”

While many of the memories Sarah and David return to are ones of trauma and sadness, “A Big Bold Beautiful Journey,” in theaters Sept. 19, is anything but dark or depressing. “Even though it’s got a lot of darker things, it was a very light film. Everything felt very light,” Robbie said. “It’s magical, it’s beautiful, and it’s romantic, and it does deal with real-life things,…