Ed, 22, and 23-year-old Taylor have developed a special bond on the road and the pair hang out together most days backstage and after the concerts.
Speaking to E! News, Ed said: ''I go there, hang out with Taylor, I play a show, do my duet with her, then I hang out a bit more and then I go. So, really, it's a nice tour.
''Six months is a long time to go on tour and leave your family and friends and if you haven't got a friend on the road it can get quite lonely.''
Ed - who recorded the song 'Everything Has Changed' with Taylor - is having the time of his life supporting the country star and has been getting a huge buzz each night because of the reception his songs are getting from the audiences.
Speaking to Parade.com, he explained: ''I'm loving the 'Red Tour'. It's fun. Singer/songwriters always say they prefer smaller venues, but there's nothing like playing to 15,000 people a night and having them scream lyrics that you've written back to you.''
Although Ed and Taylor - who previously dated the 'Lego House' singer's friend Harry Styles - are great pals he has so far resisted playing one of his famous backstage pranks on her because he isn't sure how she'd react.
He said: ''I don't know if I'd get forgiven if I pranked her, so it has happened yet!''
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