Recollecting deception, close associate leaves spouse (7)
I believe the answer is:
partner
'spouse' is the definition.
(synonyms)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for partner that I've seen before include "sometimes joining in crime" , "One sharing home or business" , "Companion at bridge, dance, or home" , "Professional colleague" , "Associate, in business or private life" .)