Lover no longer kissed we hear: imagine! (6)
I believe the answer is:
expect
'imagine' is the definition.
(I know that imagine is a more specific form of the action expect)
'lover no longer kissed we hear' is the wordplay.
'lover no longer' becomes 'ex' (ex-lover).
'kissed' becomes 'pecked' (pecking is a kind of kissing).
'we hear' indicates a 'sounds like' (homophone) clue.
'pecked' is a homophone of 'pect'.
'ex'+'pect'='EXPECT'
(Other definitions for expect that I've seen before include "Wait for" , "Believe about to happen" , "Imagine" , "Assume or look forward to" , "Regard something as probable" .)