Some regret nag re-enters village courting couples frequented (6,5)
I believe the answer is:
gretna green
'village courting couples frequented' is the definition.
(historically popular destination for elopers)
'some regret nag re-enters' is the wordplay.
'some' indicates a hidden word (some of the parts of the word are used).
'GRETNA GREEN' is hidden within 'regret nag re enters'.
(Other definitions for gretna green that I've seen before include "where many formed a union" , "Place once popular with elopers" , "Scots village associated with weddings" .)