Former lover I left, meeting European in bar (5)
I believe the answer is:
Here is my best explanation:
'bar' is the definition.
'former lover i left meeting european' is the subsidiary indication.
'former lover' becomes 'ex'.
'left' becomes 'l' (common abbreviation**).
'meeting' is a charade indicator (letters next to each other).
'european' becomes 'e' (abbreviation e.g. EU).
'in' is the link.
(Other definitions for exile that I've seen before include "One forced to live abroad", "Person dismissed from country", "Banished citizen", "being always away from home", "Deportation", "Person forced to live abroad", "One banished", "Banishment from home", "Jews' experience in Babylon" and "Outcast".)