Of uncertain age and without a boyfriend (8)

I believe the answer is:

dateless

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'without a boyfriend' is the definition.
('boyfriend' can be 'date' (I've seen this in other clues) so maybe 'without a boyfriend' can be ''dateless')

I don't understand the remainder of the clue.

Can you help me to learn more?

(Another definition for dateless that I've seen is " lacking a boyfriend to go out with?".)

I've seen this clue in the Evening Standard.

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