Mistake from sweetheart, curious embracing rogue (7)
I believe the answer is:
erratum
'mistake' is the definition.
(I know that erratum is a type of mistake)
'sweetheart curious embracing rogue' is the wordplay.
'sweetheart' becomes 'e' (the middle letter or heart of 'sweet').
'curious' becomes 'rum' (synonyms).
'embracing' is an insertion indicator.
'rogue' becomes 'rat' (rat can mean a nasty person).
'rum' enclosing 'rat' is 'rratum'.
'e'+'rratum'='ERRATUM'
'from' is the link.
(Other definitions for erratum that I've seen before include "Mistake (in publishing)" , "Published correction" , "Typo" , "Mistake in printed work" , "Slip" .)