Because some boys are shy and others can't think of anything to say to a girl because you have to be careful of what you say to girls.
start with hi or hey then how are you? then get to know him.
There could be various reasons why a boy might not respond when a girl says hi. He might be shy, nervous, distracted, or simply not interested. It's important to remember that everyone is different and may respond in their own way.
He likes you
he might do, and if you like him back ask him out and if he says no just say it was your friend :)
No boy is truly ugly, so if he is friendly and has nice personality, he is a gem that you would like for a friend, so of course you say hi back to him.
It could mean that or he is just trying to be nice.
i dont know i got my boy by him every day saying he loves me 1% then after 2 days he said 100% be confident and talk to him dont follow him but do make it look like you love him so you should probaly some times sit next to him say hi then eventually you will have to confess and he will say yes.
you just simply do it. if you keep holding back
Say hello back...it is respect
Say hello back and start a conversation if you want to. It's up to you.
You be like "aye wasup i want you babies." and he the boy will like you.
If u say hi to him and he justs mumbles hi or ignores you or... u dont see him very often !!