A couple of exquisite moments (4)
I believe the answer is:
item
'a couple' is the definition.
(a romantic couple are 'an item')
'of exquisite moments' is the wordplay.
'of' indicates a hidden word.
'ITEM' is hidden in the letters of 'exquisite moments'.
(Other definitions for item that I've seen before include "Report" , "Bit of information" , "Two people romantically linked" , "Detail (in a list)" , "Individual thing" .)