Why does he keep smiling at me?

MsCookie
Like today I was power walking my way to my sociology class which he and I share. As I opened the door to the building I looked back to see if there was anyone behind me so I can know whether to hold the door open long enough to let them catch it and as I looked back he was here and he instantly smiled at me. I paid no mind to it because there was a girl in between us. But as we were both going upstairs and I tried to look over him to check the clock he flashed me a bright smile again. When class was over and I made my way to the shuttle bus. When I got on he was sitting in one of the front rows and again as I began to walk down the isle to look for a empty seat he smiled at me again. But that time I didn't realize until I sat down a row or two behind him and noticed that his head was following the direction I had just walked.

Why does he keep smiling at me? Is he trying to be nice? Does he want to be friends?
Why does he keep smiling at me?
2 Opinion