Explosively erotic European clique (7)
I believe the answer is:
coterie
'clique' is the definition.
(I know that clique can be written as coterie)
'explosively erotic european' is the wordplay.
'explosively' is an anagram indicator (I've seen this in other clues).
'european' becomes 'E' (abbreviation e.g. EU).
'erotic' is an anagram of 'coteri'.
'coteri'+'e'='COTERIE'
(Other definitions for coterie that I've seen before include "Exclusive circle of people with common purpose" , "Exclusive circle of people, clique" , "Small exclusive circle with a common purpose" , "Group, band" , "EEC trio in exclusive group" .)