Obsessive fiddler died for love (4)
I believe the answer is:
nerd
'love' is the definition.
The definition and answer can be both people as well as being singular nouns.
Maybe you can see an association between them that I can't see?
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for nerd that I've seen before include "Irritating person (slang)" , "Obsessive," , "In slang, a foolish or uninteresting person" , "Socially inept but knowledgeable person" , "Boring person" .)