so this might sound a little dumb and a little immature?

so im a senior in high school and the other day i was standing outside of this classroom waiting for my friend to talk to her teacher.. there was no one else in the hallway and then i heard some laughing so i turned around to see this kid standing on the other side of the hallway (like 5 feet away from me). i've talked to him once or twice, but it wasnt even a conversation, and i barley have seen him around. he just stood there and looked at me, laughing alot and then he got really red like he was embarrassed. he wouldnt make eye contact with me for long and i really didnt know what was going on because he is just some random kid.

his friend was with him at first and then he backed up with his hands up, around the corner almost saying "im staying out of this one" or something like that.. but thats all there was and then the kid that was standing near me walked away with his friend.

now during every single class that i have i see him in the hallway and we sorta make eye contact, but we never talk. he's a year below me and i know how it is to be too nervous to talk to someone older than you when you have no idea who they are and have never talked to them before. idk if thats the case in this situation, but what do you think?

i think he's really cute and would love to talk to him, but i'm just as nervous as he seemed to be. i wanna just add him on facebook and see if he will start talking to me through there.. should i add him or should i just ignore it and wait for him to add me? what do you guys think?