A while ago, someone in my class asked me about my msn. Last semester he was one of the people in my group for a group project and I was familiar with his face and saw nothing bad about him so I just told it to him. He logs in often and always starts the conversation first by popping up a new message box. But then when we see each other at school, he never talks to me, never greets me in the hallway when we see each other, and never have a conversation. Once we saw each other in the eye in the hallway and I tried to smile and greet to him but then he avoided his eye and just walked away. He is like a different person at school compared to how he behaves in msn. We are really good friends and have good conversation through msn but we're like complete strangers at school. Any ideas?