In case you were under the impression that the representation of top flight football as having all the melodrama of your local high school was a total fabrication of the media, Real Madrid goalkeeper Iker Casillas comes along to assure you that it really isn't. From ESPN:
On his relationship with [Cristiano] Ronaldo, Casillas said: "He's a friend and a team-mate, a team-mate and a friend - but he's also an enemy, because we argue a lot."
He added: "One doesn't net 40 strikes in one season in the league by chance. He's done this more than once, so he must be very good."
Note how Iker could have simply said that Ronaldo is very good instead of that he "must be very good," because this is how proper frenemies speak of each other. It looks like Cristiano will have something to add to his burn book.
Also, the picture at the top of this post could be the basis of an entire story arc on Skins.