Girl with Don made out in the dark (7)
I believe the answer is:
unaware
'in the dark' is the definition.
(I've seen this before)
'girl with don made out' is the wordplay.
'girl with' becomes 'una' (I am not sure about this - if you are sure you should believe this answer much more).
'don' becomes 'wear' (synonyms).
'made out' indicates a 'sounds like' (homophone) clue (to make something out is to hear it).
'wear' is a homophone of 'ware'.
'una'+'ware'='UNAWARE'
Can you help me to learn more?
(Other definitions for unaware that I've seen before include "Unexpected" , "Not realising" , "Uninformed" , "In the dark" , "Unwitting, not knowing" .)