Terribly nervy when on date, sometimes (15)

I believe the answer is:

everynowandthen

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'sometimes' is the definition.
I know nothing about this answer so I cannot judge whether this works.

'terribly nervy when on date' is the wordplay.
'terribly' indicates an anagram.
'nervy'+'when'+'on'+'date'='nervywhenondate'
'nervywhenondate' anagrammed gives 'EVERYNOWANDTHEN'.

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I've seen this clue in The Times.

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