The newly engaged couple watched their two respective teams battle it out from opposite ends but met at half-time when Jamie got down on one knee, having told now-fiancé Karen that he and she would be taking their two children - Flynn and Winnie - down for a photo opportunity between the dugouts.
Karen said, "I was blown away as I had absolutely no idea, even when they started talking about us on the tannoy! Selhurst Park means so much to me and my family."
Following the proposal, however, Jamie and Karen returned to their own ends of the ground with their two children, who also support their parents' opposing teams; Flynn is a Lilywhite and Winnie's an Eagle.
Watch the special moment below now!