Business; amour (6)
I believe the answer is:
affair
This clue is a double definition.
'business' is the first definition.
(I've seen this before)
'amour' is the second definition.
(synonyms)
(Other definitions for affair that I've seen before include "Concern (maybe extra-marital?)" , "Concern, matter, business" , "A matter; amorous episode" , "scandal" , "Secret romance" .)