Fling rider around for partner (10)

I believe the answer is:

girlfriend

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'partner' is the definition.
The definition and answer can be both people as well as being singular nouns.
Maybe there's an association between them I don't understand?

'fling rider around' is the wordplay.
'around' is an anagram indicator.
'fling'+'rider'='flingrider'
'flingrider' anagrammed gives 'GIRLFRIEND'.

'for' is the link.

Can you help me to learn more?

(Other definitions for girlfriend that I've seen before include "date" , "Female squeeze" , "Sweetheart" , "Female companion" .)

I've seen this clue in The Daily Express.

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