Sid, upset about a girl being put out (6)
I believe the answer is:
issued
'being put out' is the definition.
(I've seen this before)
'sid upset about a girl' is the wordplay.
'upset' indicates anagramming the letters.
'about' means one lot of letters goes inside another.
'a girl' becomes 'sue' (girl's name).
'sid' is an anagram of 'isd'.
'isd' enclosing 'sue' is 'ISSUED'.
(Other definitions for issued that I've seen before include "released" , "Published and came forth" , "Published, brought out" , "Published, put out" , "Brought out a publication" .)