Male blushing about girl affected (8)
I believe the answer is:
mannered
'affected' is the definition.
(similar in meaning)
'male blushing about girl' is the wordplay.
'male' becomes 'm' (common abbreviation).
'blushing' becomes 'red' (blushing makes someone's face go red).
'about' says to put letters next to each other.
'girl' becomes 'anne' (I've seen this before).
'red' put after 'anne' is 'annered'.
'm'+'annered'='MANNERED'
(Other definitions for mannered that I've seen before include "Acting with exaggerated behaviour" , "unnatural" , "Artificial, stilted" , "Idiosyncratic" , "with style?" .)