Selena Gomez spent her Friday afternoon engaged in some serious PDA, making out with a tall, dark, and handsome younger man.

No, Justin Bieber didn’t dye his hair — Sel was wrapped up in a passionate kiss with another guy! Say it ain’t so!

Luckily for the Biebs, Selena was just sharing an on-screen kiss with her co-star Nat Wolff on the set of Parental Guidance Suggested on Aug. 10. But considering that Nat is only 17 and Selena is taken? They might need some parental guidance off-set, too!

Do you think Bieber is jealous of Selena locking lips with her new co-star? Weigh in below!