Romance over for sweetheart (5,3)
I believe the answer is:
loved one
'sweetheart' is the definition.
(I've seen this before)
'romance over' is the wordplay.
'romance' becomes 'love' (I've seen this in another clue).
'over' becomes 'done' (both can mean finished).
'love'+'done'='LOVED ONE'
'for' is the link.
(Other definitions for loved one that I've seen before include "Sweetheart" , "Precious person" .)