They both have been saying it onb Twitter but the pair are going to make so fresh new music together.
Taylor Swift and Ed Sheeran said on their twitters:
Taylor Swift: Eating cheeseburgers, scribbling on guitars, writing songs with @edsheeran.
Ed Sheeran: In and out burger, defacing guitars and writing music with @taylorswift13
This is going to be so cool we love both their musics so this is just heaven for us.