Emotion that counts for nothing (4)

I believe the answer is:

love

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This might be a double definition.

'emotion that counts' is the first definition.
'love' can be an answer for 'emotion' (love is a kind of emotion). I'm unsure of the remainder of the definition.

'nothing' is the second definition.
(love is zero in tennis)

'for' is the link.

Can you help me to learn more?

(Other definitions for love that I've seen before include "Intense affection" , "See 10" , "Ardent emotion" , "Nil score in tennis, dear" , ""Tell me the truth about ___" (Auden)" .)

I've seen this clue in The Irish News.

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