Emotions from two Europeans engaged in love affairs (8)
I believe the answer is:
feelings
'emotions' is the definition.
(feelings are emotions)
'two europeans engaged in love affairs' is the wordplay.
'two europeans' becomes 'EE' (abbreviation for 'European' written twice).
'engaged in' indicates putting letters inside.
'love affairs' becomes 'flings' (fling can mean a love affair).
'ee' put into 'flings' is 'FEELINGS'.
'from' acts as a link.
(Other definitions for feelings that I've seen before include "Emotions or sensations" , "Love, hate, sorrow etc." .)