Rows from couples: right to break up? (5)
I believe the answer is:
tiers
'rows' is the definition.
(tier is a kind of row)
'couples right to break up?' is the wordplay.
'couples' becomes 'ties' (I've seen this in other clues).
'right' becomes 'R' (common abbreviation).
'to break up?' is an insertion indicator (inserted letters break up or split the word).
'ties' placed around 'r' is 'TIERS'.
'from' acts as a link.
(Other definitions for tiers that I've seen before include "drawers?" , "Rows; ranks" , "Row upon row" , "Layers, strata" , "Tries (anag.)" .)