Jimmy Fallon and Harry Styles are playing a game of jazzy one-upmanship in some hilariously adorable promos for their upcoming episode of Saturday Night Live.

Fallon returns to host SNL for the first time since 2013 on Saturday -- and he's bringing Styles along as his musical guest. It could be a perfect match, if their chemistry in this teaser is any indication.

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Watching Fallon and Styles' comedic timing and friendly rapport, you have to wonder if Justin Timberlake is getting just a tiny bit jealous. Although, considering their friendship, it wouldn't be shocking to see the five-time host make a surprise cameo.

Fallon's upcoming episode -- which will also be Styles' solo debut performance since branching out from One Direction -- is an historic one for the long-running sketch comedy series. For the first time ever, SNL will air live on both the East Coast and West Coast, and fans are excited to see what effect the added pressure will have on the show.

Styles is expected to perform "Sign of the Times," his debut solo single which he released last week, although it's unknown what he'll sing for his second performance.

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Recently, Fallon opened up to ET about hosting the show's first-ever truly live episode, and he said he was "honored" that they asked him to "be part of the [show's] history."

Check out Fallon's triumphant return to Studio 8H when SNL airs live on April 15 at 11:30 pm. ET, 8:30 p.m. PT on NBC.

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