Dave's upset about a politician being treated seductively (6)
I believe the answer is:
vamped
'treated seductively' is the definition.
The definition and answer can be both related to change as well as being past participle verbs.
Perhaps they are linked in a way I don't understand?
'dave's upset about a politician' is the wordplay.
'upset' is an anagram indicator.
'about' indicates putting letters inside.
'a politician' becomes 'mp' (Member of Parliament).
'dave' anagrammed gives 'vaed'.
'vaed' placed around 'mp' is 'VAMPED'.
'being' is the link.
Can you help me to learn more?
(Other definitions for vamped that I've seen before include "Made up musical accompaniment for song, as on piano" , "seduced" .)