Christian Eriksen apparently did give Jan Vertonghen a black eye during training. However, the incident was a freak accident rather than the result of a fight over an affair.
Some click-hungry corners of social media went nuts earlier this week, reporting as fact that Vertonghen had been involved in an affair with Eriksen's 'wife' Sabrina Kvist Jensen (to whom he isn't actually married) ahead of their Champions League clash with Bayern Munich.
Both players moved to rubbish the rumours on social media, with Eriksen calling out a since-deleted tweet calling the story as 'bullsh*t'.