Although Taylor Swift may not be "getting back together" with ex- boyfriend, Harry Styles, rumors have swirled that she has moved on with Ed Sheeran.

According to E, the night before Taylor performed in a wedding dress and then changed down to a skintight black ensemble at the 2013 Brit Awards, Sheeran arrived at the singer's hotel and went in straight to her room. According to a source, the twosome "stayed in the room, just the two of them, until around 4 a.m."

When Sheeran, 22, departed the hotel, a witness said he looked "very happy." From there, he got into the car that Taylor had used earlier in the day and was driven away. "He looked very pleased with himself," the source said.

On Ed's birthday, Feb. 17, Taylor tweeted, "So. One of my favorite human beings on the planet turns 22 today. I hope @edsheeran has the most perfect show in LA tonight! HAPPY BDAYYYY."

Another source tells E! News that Taylor and Ed "briefly dated last spring. He thinks she is really cute and they have a great chemistry together."

Ed collaborated with Taylor on Everything Has Changed  which is featured on her Red album. They've also performed together and, of course, are both friends with Styles. 

The next day, Ed tweeted Taylor back with a lyric directly from her song 22, " I don't know about you, but I'm feeling pretty damn 22 right about now."

Swift was the opening act at the Grammy Awards on Feb. 10. She performed We Are Never Ever Getting Back Together and was rumored to diss Styles when she put on a fake British accent for a portion of the song.  In a radio interview with London's Capital FM studio on Feb. 17 about One Direction's new single, One Way or Another, Styles had nothing but good things to say about Swift's Grammy performance.

"She's a great performer and she always performs great. She's always good on the stage," Style said. "She's been doing it a long time. She knows what she's doing on stage. It was just another good Taylor Swift performance. It was good."

Tags: Taylor Swift ed sheeran