This writer getting to stay endlessly after party creates a row (8)
I believe the answer is:
domestic
'a row' is the definition.
(I've seen this before)
'this writer getting to stay endlessly' is the wordplay.
'this writer getting' becomes 'dome' (I can't justify this - if you can you should believe this answer much more).
'to stay' becomes 'stick' ('stick' can be a synonym of 'stay').
'endlessly' means to remove the last letter.
'stick' with its last letter taken off is 'stic'.
'dome'+'stic'='DOMESTIC'
'after party creates' acts as a link.
This may not be right. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for domestic that I've seen before include "Relating to the home or family" , "of family affairs" , "Servant - not foreign" , "hired help" , "Concerning internal affairs" .)