A heartless lie, trouble for lover (10)
I believe the answer is:
Here is my best explanation:
'lover' is the definition.
(I've seen this before)
'a heartless lie trouble' is the subsidiary indication.
'heartless' means to remove the middle letters.
'lie' becomes 'fiction' (I've seen this before).
'trouble' becomes 'ado' (I've seen this before).
'fiction' with its centre taken out is 'ficion'.
'for' is the link.
(Other definitions for aficionado that I've seen before include "supporter", "Admirer", "freak", "Informed enthusiast", "Devotee", "expert", "Expert person", "ardent follower", "Enthusiast" and "Fan; enthusiast".)