PLeaseee Helpp ! Guys & Girls - & ASAP !?

I don't really knoe him & i seen him around scool & i dont knoe what it is, he would just look at me with this straight face & sometimes it would seem like there's something he wants to say, but he doesnt say it. Idk if he just has alot on his mind ? or what ? like i mean he would look at me & wen i catch him , even if we're across the room i can tell he's looking right into my eyes & then i turn away & act like i didnt notice, so he does the same shorty after. but what is he trying to say? and what look is it that he has? pleaseee helpp. ! thanxx