Did Scott Eastwood and Brittany Brousseau Break Up?

By Nicole Weisensee Egan and Rennie Dyball

10/26/2014 AT 08:00 PM EDT

Scott Eastwood and his onscreen love interest, Britt Robertson, went to round four of the Professional Bull Riders in Las Vegas Saturday night, telling the crowd about their upcoming Nicholas Sparks movie about a bull rider, The Longest Ride.

But it was another Britt – model Brittany Brousseau – who was noticeably absent.

Months after their romance made headlines in May, a source tells PEOPLE she and Eastwood are no longer together – but he was a bit more coy.

Asked about his love life, the son of Clint Eastwood tells PEOPLE, "I'm young. I'll be 29 in March. I'm just really focused on my career." (Eastwood is currently costarring in the box-office smash Fury with Brad Pitt.)

Despite all the buzz about who wasn't there, Eastwood and Robertson seemed to be having a good time.

He tipped his hat to the bull riders and said he'd like to try to ride a bull one day, while Robertson, 24, said she was on her feet cheering for the riders.

Afterward, they hit the red carpet at the PBR's 21st birthday party at Mandalay Bay.

Eastwood says he's been enjoying spending time with the professional cowboys to prep for his role.

"It's such a cool brotherhood," he says. "They're all badasses."

He hasn't actually gotten on a bull yet, but don't be surprised if he follows in the footsteps of former NFL star Chad Ochocinco when the Professional Bull Riders go to Dallas in March.

"That's what bull riding is – conquering your fear – which I think is the coolest part of it," he says.