Being angry, he breaks a date (6)
I believe the answer is:
heated
'being angry' is the definition.
(I've seen this before)
'he breaks a date' is the wordplay.
'breaks' indicates anagramming the letters.
'date' with letters rearranged gives 'ated'.
'he'+'ated'='HEATED'
(Other definitions for heated that I've seen before include "Raised the temperature" , "Angry or warmed" , "fired" , "Vehement" , "Furious" .)