Thrills lover no longer mentions (7)
I believe the answer is:
excites
'thrills' is the definition.
(I've seen this before)
'lover no longer mentions' is the wordplay.
'lover no longer' becomes 'ex' (ex-lover).
'mentions' becomes 'cites' ('cite' can be a synonym of 'mention').
'ex'+'cites'='EXCITES'
(Other definitions for excites that I've seen before include "Stirs up, stimulates" , "Thrills" , "Animates" , "Makes eager" , "Provokes" .)