Well, this is going to be interesting: real-life couple Kaia Gerber and Lewis Pullman are taking their off-screen chemistry into an on-screen minefield. They just joined Dylan O'Brien in James Morosini's new erotic thriller Bulls, and the setup sounds like trouble in neon lights.
What is Bulls actually about?
O'Brien plays Danny, a guy who books a last-ditch escape to a hedonistic island resort to fix himself enough to save his relationship. Instead, he meets Ava (Gerber), who happens to be married, and falls into a mess of sex, power plays, and psychological warfare. The 'married' part? Her husband Marco (Pullman) is very much an alpha presence, and getting caught by him is not the endgame — it 's basically the starting gun.
- Danny: Dylan O'Brien
- Ava: Kaia Gerber
- Marco: Lewis Pullman
Bulls is written and directed by James Morosini (35), and it marks the first time Gerber (24) and Pullman (33) will share the screen. Morosini described the movie to Deadline on Friday, May 1 like this:
"I wrote Bulls because it's the type of film I would cancel my plans to go see in cinemas. It's mischievous, twisty, turn-y, and most of all it's sexy."
Translation: expect sharp turns, sweaty tension, and the kind of island getaway that requires hazard pay. Also, with a title like Bulls and a character literally called an alpha husband, subtlety is not the vibe — and that is kind of the point.
Kaia + Lewis: where the real-life story meets the reel one
Gerber and Pullman have been dating since late 2024. Per reports at the time, they quietly started seeing each other in early December 2024, but kept it under wraps until news broke of Gerber's split from Austin Butler. For clarity: Gerber and Butler (34) dated for about three years and had already broken up in October 2024.
The Gerber–Pullman thing came together the old-fashioned Hollywood way: mutual friends, overlapping circles, low pressure. The word then was that he is low-key, the chemistry clicked fast, and she felt like she could just be herself. They kept it pretty private overall, though you might remember them making out on the red carpet at the 82nd Venice International Film Festival in September 2025 — so not that private.
As for how she feels about the relationship now, Gerber has called it healing and even offered some frank advice on the 'Therapuss' podcast in October 2025: basically, if you can date someone who is (or could be) your friend, do that; respect and ease go a lot further than just lust when it comes to an actual partner.
The casting cherry on top
When the Bulls news hit, Gerber reposted the Deadline announcement to her Instagram Stories and added eight hot-face emojis. Not exactly poker-faced enthusiasm.
All told, you've got a sexy, twisty island thriller fronted by O'Brien, with Gerber and Pullman stepping into a volatile triangle — while also testing their real-life chemistry on camera for the first time. That combo alone makes Bulls one to watch.