Ed Sheeran is known for penning some of the most lyrically appealing songs--it's pretty hard to pick a favorite.

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That is not the case for one of the members of One Direction! All the boys in 1D have been friends with Sheeran for years now (he has written some songs for them after all). Plus, it seems like he and Harry Styles have the closest friendship.

What makes us think that? Well, Styles is able to pick one favorite tune from the 24-year-old musician and the reasoning is so very sweet!

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While chatting with BBC Radio 1, Styles dished with zero hesitation what his favorite Sheeran track is. It is the romantic ballad "Thinking Out Loud" from Sheeran's sophomore album x.

"It's a personal song for me," Styles revealed, explaining, "I think a couple of Christmases ago I actually bought Ed a guitar for Christmas. And this was one of the first songs that he wrote on it. So it's one of my favorite Ed Sheeran songs."

A fan shared the snippet on Twitter so you can listen to it below.

Styles is so sentimental! Sheeran's track seems even sweeter now. It is about everlasting love, but now there is even a cute friendship story behind it with how it was written.