Dependant sweetheart, full of passion (6-2)
I believe the answer is:
hanger-on
'dependant' is the definition.
(someone who hangs on others)
'sweetheart full of passion' is the wordplay.
'sweetheart' becomes 'hon' (both are terms of endearment).
'full of' is an insertion indicator.
'passion' becomes 'anger'.
'hon' going around 'anger' is 'HANGER-ON'.
(Other definitions for hanger-on that I've seen before include "An unwanted follower or dependant - swings out of you" , "Social leech" , "Persistent follower" , "Unwanted follower or dependant, parasite" , "Someone who tags along" .)