Ok maybe this is my fault? I told him that because could talk in person!

I'm just going to throw this out there...  You met him in person but he was not interested in you in person...but you continued to open your personal life to him online?  That is a big red flag!

Let me tell you something.  You need to really (and I mean REALLY REALLY) learn how to read body language.  It is becoming a lost art.  Too many people staring at computer screens and cell phones and not talking face to face.  You have to start observing people, before you talk to them, while you talk to them, while they talk to you, when they have finished talking to you...and this is not being creepy.  This is simply reading people.  You need to learn the cues that body language gives you and integrate this into your communications.  He was staring at you (probably with disinterest, detachment, possibly just letting his mind wander out of boredom, maybe he really does want to stare at someone else and you are taking up his valuable homeroom time to do it, who knows?) and this requires a snap decision.  Either you change the conversation and see if that changes things, or you say "oh well.  It was nice meeting you face to face....see you around..." and cut your losses.  Oh and if you feel awkward...there is a reason for it.  Listen to your instincts.  Your instincts will never lie to you.

By the way, if they are uninterested in you offline, then they aren't really all that into you online either.  If you learn to read body language, you'll pick up on little cues, things that might tell you when a topic makes someone anxious or bored, interested or repulsed.  It will tell you things they might be trying to hide from you (people do one thing and say another all the time).  A little hint, that translates into writing as well.  There are little things you can read in a persons's online response that will give you a wealth of information, simply by considering how they said what they said.

I want to say I feel bad for you.  Rejection is never easy.  That being said, cut off the online contact and start ignoring him at school.  Take it as a lesson learned and consider the whole picture first next time.  And practice recognizing body language.  It will help you avoid social mishaps like this in the future. 

He didnt want to offend you, because he probably thought you would get mad at him if he admitted he was staring at you?

Thats what it sounds like anyway. I wouldnt get offended over that.

Or just use your own sense, and try to see what direction he was looking at. I mean it should be pretty obvious if he is staring at you.

Or he was just obviously (didnt read down until later) into someone else like your story. But it's okay! 

I would just try to ignore those people. Who cares what they think.

Awww it's okay. I wouldnt stress yourself out too much. Why are you avoiding him? Just talk to him. I'm sure he still wants to be your friend. Dont be afraid. 

It's okay