Baldwin of "It's Complicated” (4)
I believe the answer is:
alec
'baldwin of it's complicated' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for alec that I've seen before include "Smart boy?" , "Smart man?" , "Boy's name (a smart one?)" , "A smart . . . . is a know-all in lace" , "Sir -- Guinness, actor" .)