Falling for you.
how do you get a guys attention when he doesn't even know you exist? </3
Well, you talk to him. Make a point to smile and say “Hey” when you see him. He’ll start responding back everyday, and soon enough he’ll be the one greeting you everyday.
Also, don’t be afraid to start a conversation with him. A light topic like a movie or tv show will start an easy, flowing conversation. (“Hey, have you seen Once Upon a Time? Cause you look just like one of the characters!”) You then have a reason to talk to him, that’s not overly weird. It also guarantees he’ll answer back.