Dope, you heard, admitted to love for Liberal (8)
I believe the answer is:
generous
'liberal' is the definition.
(similar in meaning)
'dope you heard admitted to love' is the wordplay.
'dope' becomes 'gen' (both can mean information).
'you heard' becomes 'U' (homophone of 'you').
'admitted to' indicates putting letters inside.
'love' becomes 'eros' (Greek god of love).
'u' inserted into 'eros' is 'erous'.
'gen'+'erous'='GENEROUS'
'for' acts as a link.
(Other definitions for generous that I've seen before include "Magnanimous" , "Benevolent, big-hearted" , "Willing to give unselfishly" , "Ample" , "More than adequate" .)