"Jose Mourinho declined to shake Arsène Wenger's hand after Chelsea's 2-0 defeat of Arsenal on Sunday because he felt affronted by the FA Cup holders' manager.
Mourinho had circulated a signed corporate Christmas card to all the Premiership managers but had written a personal message in Wenger's. In that he is said by Chelsea sources to have apologised over the pair's dispute this season, insisting he had never intended their spat to become personal.
However, one of the Arsenal backroom staff is said to have approached a Chelsea counterpart before the game to ask about the authenticity of the message, a question which dismayed Mourinho.
When Wenger walked past Mourinho without a word in front of the dugouts, the Portuguese felt it was he who had suffered a snub, prompting his post-match rebuff."
Is this the behaviour of adults?