Worried good person married, embracing sweetheart (6)
I believe the answer is:
stewed
'worried' is the definition.
(as in stewing in your fears)
'good person married embracing sweetheart' is the wordplay.
'good person' becomes 'st' (saint).
'married' becomes 'wed' (similar in meaning).
'embracing' indicates putting letters inside.
'sweetheart' becomes 'e' (the heart/centre of 'sweet').
'st'+'wed'='stwed'
'stwed' placed around 'e' is 'STEWED'.
(Other definitions for stewed that I've seen before include "Cooked (prunes?)" , "casseroled!" , "Was long embarrassed" , "Drunk; cooked in pot" , "mortal" .)