Libertine's destiny with many wives and concubines curtailed by love (8)
I believe the answer is:
lothario
'libertine's' is the definition.
(both can mean a womaniser)
'destiny with many wives and concubines curtailed by love' is the wordplay.
I cannot quite see how this works, but
'destiny' could be 'lot' (I've seen this in another clue) and 'lot' is present in the answer.
'love' could be 'o' (love means zero in tennis) and 'o' is present in the answer.
The remaining letters 'hari' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for lothario that I've seen before include "Libertine or woman-chaser" , "Dissolute" , "Seducer, rake" , "Heartbreaker" , "Don Juan-type character" .)