See some boys being bashful (3)
I believe the answer is:
coy
'bashful' is the definition.
(I've seen this in another clue)
'see some boys' is the wordplay.
'see' becomes 'C' (the word for the letter, according to Chambers).
'some' indicates the central letters.
The middle letters of 'boys' are 'oy'.
'c'+'oy'='COY'
'being' is the link.
(Other definitions for coy that I've seen before include "Reserved" , "Military team in brief" , "Affectedly modest or shy" , "Pretending modesty" , "reluctant to divulge information" .)