The famous-parented Schwarzenegger, who's a USC student and model, snapped a selfie with the often-raunchy pop star as they kissed, capturing Miley all decked out in a cardinal-and-gold hat and letterman's jacket.
Cyrus then relaxed onto her maybe-beau's shoulder with a smile as they checked themselves out on his phone.
The 21-year-olds -- she's the older one -- were also seen together Wednesday night as they left a Q&A for "Still Alice," a flick produced by his mother, TMZ reported.
Although he might have been tweeting with Kendall Jenner and Selena Gomez at the time and told the mag they were "girls for the future," Schwarzenegger added, "My eye, though, is set on Miley."
It's always good to have a goal, Patrick. Good to have a goal.