Their friendship is seriously amazing. Swift wrote the sweetest essay to Sheeran for Time magazine's 100 most influential people. 

She writes "He is protected by an impenetrable and ever-present armor of enthusiasm that has helped him endure any setback, letdown or underestimation...He’s like a fighter who pops back up on his feet before you even noticed he’d been knocked down." 

How sweet is that! Read the rest here.