See Dramatic Moments Between Jose MorinHo and Arsene Wenger During the Match at Stamford Bridge.

Chelsea and Arsenal played today and Chelsea won 2-0. (Hazard scored The first goal while Diego costa scored the 2nd goal)
20 minutes into the match, Arsenal coach Arsene Wenger walked over to Chelsea coach Jose Mourinho and pushed him after they disagreed over a tackle by a Chelsea player on an Arsenal player. While protesting to an official over the tackle, Wenger walked too close to Mourinho's side and Mourinho also started protesting to an official. An angry Wenger walked up to Mourinho and pushed him in the chest and of course Mourinho pushed him back. Other officials broke them up.
The two coaches didn't shake hands after the match! Arsene Wenger has never beaten a Mourinho side so there's always tension between these two.
Photo credit: UK Daily Mail