Topless worker occasionally cuddling former partner without desire (7)

I believe the answer is:

asexual

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'partner without desire' is the definition.
I can't tell whether this defines the answer.

'topless worker occasionally cuddling former' is the wordplay.
'topless' means to remove the first letter.
'worker occasionally' becomes 'casual' (a casual worker works from time to time).
'cuddling' indicates putting letters inside (inserted letters are embraced or welcomed in).
'former' becomes 'ex' (prefix meaning former or onetime).
'casual' with its first letter removed is 'asual'.
'asual' placed around 'ex' is 'ASEXUAL'.

Can you help me to learn more?

(Other definitions for asexual that I've seen before include "Neither male nor female" , "Spurning Congress" , "Without functioning organs of reproduction" , "(Of reproduction) vegetative" , "Neuter" .)

I've seen this clue in The Times.

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