Article continues below advertisementCould there be bad blood between these celeb besties?In an interview with Andy Cohen before his SiriusXM's Small Stage Series concert on Wednesday, September 24, Ed Sheeran revealed the unexpected way he found out about Taylor Swift's engagement to Travis Kelce.Despite his long-standing friendship with the pop star, the "Photograph" singer, 34, discovered the news with the general public.Article continues below advertisementSource: SiriusXM/YouTubeEd Sheeran found out about Taylor Swift's engagement on Instagram.