Angry, he breaks a date (6)
I believe the answer is:
heated
'angry' is the definition.
(I've seen this before)
'he breaks a date' is the wordplay.
'breaks' indicates an anagram.
'date' with letters rearranged gives 'ated'.
'he'+'ated'='HEATED'
(Other definitions for heated that I've seen before include "This type of argument is passionate" , "Raised the temperature" , "fired" , "Of discussion, angry and hostile" , "Angry or warmed" .)