@giggleskeyboard,
Hi Dave (or whatever his name is)
, wanna get a soda after class? I mean like a date.
He says yes - great!
He says not right not, I'm busy, let's reschedule - great!
He says no, I'm sorry, that's not the way I feel about you - okay, but at least you know.
Best buds do like to be near each other. It is not necessarily dating interest, so be prepared for option #3. But do ask - if you don't, you'll just bite your nails and wonder.