Is Ed Sheeran Teasing a New Song Called 'IDC' With Justin Bieber?

What are Ed Sheeran and Justin Bieber up to?!

The 28-year-old “Castle on the Hill” star uploaded a video on his Instagram Story on Sunday afternoon (May 5).

PHOTOS: Check out the latest pics of Ed Sheeran

In the video, Ed is in front of a laptop at a desk.

“Hey guys, I’ve got some new music coming out. Just want to play you the song…see if you like it,” he says before hitting play on a snippet that lasts about five seconds.

“Oh. Thought it was the whole song,” he teased.

Justin and Ed have been teasing new music over the past few days, and fans are theorizing that the new song is called “IDC.”

The file that Ed plays in the video is called “idc_v10.05,” suggesting that it’s going to drop on May 10!