Resentment of first couple in club going for date (7)
I believe the answer is:
dudgeon
'resentment' is the definition.
(thesaurus)
'first couple in club going for date' is the wordplay.
I cannot quite see how this works, but
'going' could be 'on' (both can mean functioning or activated) and 'on' is present in the answer.
'date' could be 'd' (common abbreviation eg in DOB, date of birth) and 'd' is located in the answer.
This may be the basis of clue (or it may be nonsense).
'of' acts as a link.
(Other definitions for dudgeon that I've seen before include "Deep resentment" , "Anger" , "Offended indignation" , "Feeling of intense indignation" , "Angry feeling" .)