Better brush up on those answers, girl! In a recent episode of Carpool Karaoke, the new Mrs. Justin Bieber, Hailey Baldwin, and close pal, Kendall Jenner, got up to a lot of hilarious shenanigans, including putting the brand new Biebs on the spot in the form of… a lie detector test. Yep, you read that correctly — and said lie detector test was all about honesty in relationships. Oh, how did she do, you ask? Well, let us explain.

The first question was a pretty typical one — has Hailey ever looked through her BF’s cell phone? Come on, we’ve all done it at least once. Turns out, Hailey has too. “Yes, I have,” was Hailey response, and according to the lie detector: true. Look out, Justin. You never know when the wife might be snooping in your cell. Considering she freely admitted it, you might wanna change that passcode — or don’t, if y’all trust each other that hard.

Kendall and Hailey go back and forth with questions for each other about their friendship and other little dirty secrets (including Kendall’s supposed stint with two boyfriends, um, what), and truthfully, they both mostly kill it. But the best part of the segment comes in the final question.

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“Does Justin think I’m cool?” Kendall asked Hailey, like she really thinks he doesn’t. It’s kind of cute, honestly. “Of course he does,” Hailey answered honestly before being told her answer was actually a straight up lie. Hailey and Kendall laugh up a storm while Hailey reassures Kendall, “I swear he does,” and even hilariously tells the lie detector administrator, “Sir, I’m sweating.” LOL, we don’t blame you, Hail.

It was pretty adorable to see these two sweat it out under the pressure of a lie detector test, but truth be told, we could have used a few more juicy Qs. For starters, Hailey, what did you find on Justin’s phone? Wink wink.

You can watch Hailey and Kendall’s episode of Carpool Karaoke: The Series on Apple Music.