Try again to hug after blushing (4)
I believe the answer is:
redo
'try again' is the definition.
(to attempt or do again)
'hug after blushing' is the wordplay.
'hug' becomes 'o' (O can represent a hug in written messages).
'after' is a charade indicator (letters next to each other).
'blushing' becomes 'red' (blushing makes someone's face go red).
'o' after 'red' is 'REDO'.
'to' is the link.
(Other definitions for redo that I've seen before include "Decorate (eg a room) again" , "Carry out again" , "Fashion again" , "Start again" , "Have second thoughts" .)