Secret love affair (8)

I think it could be either:

Which length description are you looking for?:

amour

'secret love affair' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for amour that I've seen before include "Sexual liaison" , "Illicit love" , "Loved one (French)" , "Romantic liaison" , "Love affair - loved one" .)

I've seen this clue in The Guardian.

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