In fact, one video recorded after the final whistle even shows Barcelona and Celtic fans congregating in the stadium in an effort to swap club flags and scarves.
Lionel Messi scored twice as the La Liga giants secured a 2-0 victory which ensured Celtic will finish in last place in Group C.
But even the scoreline couldn’t dampen the relationship between the two groups of supporters:
Brendan Rodgers remained optimistic despite his side’s elimination from Europe, claiming after the defeat to Barca that Celtic’s performances improved throughout the competition.
He said: “We’ve played three of the best teams in Europe over the course of this competition and we’ve gradually got better with each game.
“We’ve now got to go on and make sure we can get into it next year, and each year the club is in it, it improves on and off the field. That is our ambition.”
Celtic travel to Hampden this weekend to face Aberdeen in the League Cup final, hoping to put their loss to Barcelona firmly in the rear view mirror.