Ed Sheeran and Harry Styles have been bosom buddies for years but only now has our favourite One Direction member revealed exactly which one of Ed's many great tunes he really digs. 

And what song really tickles Harry's fancy? Well, it's none other than the beautiful ballad, Thinking Out Loud. 

Speaking to BBC Radio 1, the 21-year-old revealed he had a pretty special reason for why this song trumped all the others. 

"I’m gonna pick Thinking Out Loud… It’s a personal song for me."

And why is it so personal? Well, it seems that Harry may have had a slight hand in producing that very song. 

"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 favourite Ed Sheeran songs."

Nawh!

Listen to the adorable audio below.