Relating complicated emotional relationship (8)
I believe the answer is:
triangle
'emotional relationship' is the definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.
'relating complicated' is the wordplay.
'complicated' indicates anagramming the letters (a complex or confusing ordering of the letters).
'relating' is an anagram of 'TRIANGLE'.
Can you help me to learn more?
(Other definitions for triangle that I've seen before include "Figure - percussion instrument" , "kitchen item" , "Gable shape -- 1 across (anag)" , "Geometrical figure - musical instrument" , "Constellation - three-sided figure" .)