Shawn Mendes is pretty brave for agreeing to undergo a psychological fact-check on camera, I'll give him that.
But the singer did back himself into a metaphorical corner while taking a lie detector test that's now memorialized online as a video for Vanity Fair.
In it, we see Shawn looking unusually straight-faced as he responds to questions about his professional endeavors and personal life. The machine nearby confirms whether he's telling the truth of not.
After admitting he was nervous to meet Justin Bieber when they collaborated and recognizing that he probably wasn't the cleanest roommate when he lived with Camila Cabello during quarantine, Shawn confronts a couple of questions about Taylor Swift.
Moving right along: does Shawn approve of Taylor's longtime boyfriend, Joe Alwyn? It's complicated.
"I've never personally met Joe, but he looks like a sweet guy," Shawn replies at first.
The lie detector, however, begs to differ. "You're not telling the truth. You're being deceptive," the test administrator tells him, and Shawn quickly backtracks.
"Yeah, I mean, he's [Alwyn] kind of got a little bit of a villain look about him," he says. "I mean, he looks like a nice guy but, like, he at any movement could turn into a villain, you know?"
"He's got really blue eyes, and I struggle with eyes that blue, you know?" Shawn continues. "Like, I find it easier to trust brown eyes."
Nice save, bud! You can watch Shawn sweat through the rest of his lie detector exam here or in the clip above.