Philanderer’s limitless charm embraced by group I love (8)
I believe the answer is:
lothario
'philanderer's' is the definition.
(both can mean a womanising man)
'limitless charm embraced by group i love' is the wordplay.
'limitless' says to take the centre.
'embraced by' is an insertion indicator.
'group' becomes 'lot'.
'love' becomes 'o' (In tennis, 'love' means 'zero').
The centre of 'charm' is 'har'.
'lot'+'i'='loti'
'har' inserted inside 'loti' is 'lothari'.
'lothari'+'o'='LOTHARIO'
(Other definitions for lothario that I've seen before include "Who chases female" , "Dissolute" , "Casanova" , "Womanizser" , "Libertine, lady-killer" .)