Right-o darling (8)

I think it could be either:

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4,4

truelove

'darling' is the definition.
(thesaurus)

'right-o' is the wordplay.
'right' becomes 'true' ('true' is associated in meaning with 'right').
'o' becomes 'love' (I've seen this in other clues).
'true'+'love'='TRUELOVE'

(Other definitions for truelove that I've seen before include "'The course of ... ... ne'er ran smooth'" , "Quatrefoil" , "dearest" , "Sweetheart" , "'The course of ..... ne'er runs smooth'" .)

I've seen this clue in The Telegraph.

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