I first time see...
I scared siah...
Not say all the other guys, 5 of them, all mixed school. Was the
only one in the class of 20 that was from a boys school...
When they started talking openly about sex... I was like
cowering~... 
its ok, take this year as ur learning curve
u will be fine after 3 years
u can ask about their boobs size, they will answer u openly
