Terribly sad result for love cheat (9)

I believe the answer is:

adultress

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'love cheat' is the definition.
The definition suggests a singular noun which matches the answer.

'terribly sad result' is the wordplay.
'terribly' is an anagram indicator.
'sad'+'result'='sadresult'
'sadresult' with letters rearranged gives 'ADULTRESS'.

'for' acts as a link.

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I've seen this clue in The Independent.

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