Fixated boss is dancing with Eve (9)

I believe the answer is:

obsessive

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'fixated' is the definition.
The answer and definition are not the same part of speech. However, adjectives and past participle verbs can occasionally define each other.

'boss is dancing with eve' is the wordplay.
'dancing with' is an anagram indicator.
'boss'+'is'='bossis'
'bossis' anagrammed with 'eve' can make 'OBSESSIVE'.

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(Other definitions for obsessive that I've seen before include "Unable to let go" , "Under a strong compulsion" , "Compulsive, fixated" , "Continually preoccupied" , "Compulsive, all-consuming" .)

I've seen this clue in The Sun.

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