Secret love affair (5)

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.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.