Sweet nothing (6)
This clue is a double definition.
'sweet' is the first definition.
(trifle is a kind of sweet)
'nothing?' is the second definition.
(thesaurus)
(Other definitions for trifle that I've seen before include "Small amount; dish" , "Thing of little value or importance" , "Possible component of meal" , "nothing?" , "that doesn't matter" .)
I believe this clue is a double definition.
'sweet' is the first definition.
(thesaurus)
'nothing' is the second definition.
(love means zero in tennis)
(Other definitions for love that I've seen before include "See 4" , "Nil score in tennis, dear" , "Disappointing score" , "Score of zero at tennis" , "No score, sweetheart" .)