Sheeran, 24, was performing at Manchester Arena on July 19 when he invited Jake to come on stage with Jesy, reported Ace Showbiz.
Jake shared a photo of him kneeling down to pop up the question to Jesy with Sheeran holding his guitar behind the couple.
He captioned it, "A year ago today I met her at Manchester arena, so it was only right, with a little help from my friend, that this happened. Best day of my life."
Jake thanked Sheeran on Twitter, writing, "Travelled 5 hours to sing our favourite song on his day off. I will never ever be able to repay you. Love you pal. @edsheeran." The "Photograph" singer then replied, "@Jake_Rixton my absolute pleasure. Thanks for the KFC.