Live alongside former lover on island, splitting expenses (7)
I believe the answer is:
coexist
'live alongside' is the definition.
I can't tell whether this definition defines the answer.
'former lover on island splitting expenses' is the wordplay.
'former lover' becomes 'ex' (an ex-lover).
'on' is a charade indicator (letters next to each other).
'island' becomes 'i' (geographical abbreviation).
'splitting' means one lot of letters goes inside another.
'expenses' becomes 'cost'.
'ex'+'i'='exi'
'exi' going within 'cost' is 'COEXIST'.
Can you help me to learn more?
(Other definitions for coexist that I've seen before include "Live together in peace" , "Live together in harmony" , "Live together peacefully" , "Get along together" , "Avoid conflict" .)