*He will tell you
*His friends will act nice around you, and sometimes tease him about you two
*He will say other boys are gay/stupid
*He will try to impress you
*He will blush when he's around you, or will fidget a lot
*If he seems to always be in the same place as you … Read more
I have a 3DS and it doesn't support flash player so no you can't.
But it does have a programme named Nintendo video, which collects different videos that you can watch via spotpass. On the internet you can't play games, watch/download videos or listen to/download music.