Crossword Genius

Time to regret being faithful (4)

Ross

I believe the answer is:

true

'faithful' is the definition.
(associated in meaning)

'time to regret' is the wordplay.
'time' becomes 't' (abbreviation).
'to regret' becomes 'rue' (to rue something is to regret it).
't'+'rue'='TRUE'

'being' acts as a link.

(Other definitions for true that I've seen before include "Real; accurate" , "Genuine, actual" , "Constant" , "comfortable" , "Bona fide" .)

I've seen this clue in The Guardian.
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