Crossword Genius

Not one to enjoy a close relationship (7,6)

Ross

I believe the answer is:

distant cousin

I'm a little stuck... Click here to teach me more about this clue!

'close relationship' is the definition.
I don't know anything about this answer so I cannot judge whether it can be defined by this definition.

'not one to enjoy a' is the wordplay.
I cannot quite understand how this works, but
'not' could be 'nt' (synonyms) and 'nt' is present in the answer.
'one' could be 'i' (Roman numeral) and 'i' is located in the answer.
'a' is present in the answer.
This may be the basis of clue (or it may be nonsense).

Can you help me to learn more?

I've seen this clue in The Irish Independent.
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