Look about sweetheart in brief and lure (6)
I believe the answer is:
seduce
'lure' is the definition.
(I've seen this before)
'look about sweetheart in brief' is the wordplay.
'look' becomes 'see'.
'about' indicates putting letters inside.
'sweetheart in brief' becomes 'duc' (I am not sure about this - if you are sure you should believe this answer much more).
'see' placed around 'duc' is 'SEDUCE'.
'and' acts as a link.
Can you help me to learn more?
(Other definitions for seduce that I've seen before include "get into bed?" , "Lure or entice away from proper behaviour" , "Perhaps do this to pull" , "Beguile" , "Lead astray, tempt" .)