tell him that this girl's parents must have high expectations
for her, and therefore will be very strict on who she dates. (i
dunno, just guessing)
tell him that even though you know he's sad, he must study hard for
her, if he ever hopes to have a future with her.
tell him that if he studies hard, you'll let him go out with her
and you'll cover for him 
.
jkjk
