Said in favour of being romantically attached? (6,3)
I believe the answer is:
spoken for
'being romantically attached?' is the definition.
(I've seen this before)
'said in favour' is the wordplay.
'said' becomes 'spoken' (I've seen this before**).
'in favour' becomes 'for' (I've seen this before).
'spoken'+'for'='SPOKEN FOR'
'of' is the link.
(Other definitions for spoken for that I've seen before include "having been a representative" , "Romantically attached" , "Sold!" , "Reserved" , "Already claimed" .)