Search Results: at a table by myself

So it started about a month ago, this guy was pointing to my group of friends to his friends. I thought that he was checking out my friends. However a week later, I came to lunch by myself and he and his friend kept staring. When we're the only ones in the hallway, he stares. He keeps staring at me and when I'm close up to him, he won't even look at me. Every time I catch him staring he looks away. A few days ago, I sat at his table and he was super loud and outgoing, which is weird because he is usually the quiet type. When I say behind him in the bus he kept glancing back. In addition, a few days ago, I was walking behind him, and he opened the door for a few seconds but as I got closer he walks away. Today, when I was walking behind him, he was walking really fast and kept looking back like I was chasing him. He and his friends walk by me really slow, and stare at me a lot. He's so confusing!