I've known this girl for 3 years in school. The first year we met, we talked a lot and teased each other from time to time. In the second year, we weren't in the same class, so I didn't talk to her much that year. She would just watch me when we switched classes. Now, in the third year, she's in my class. She usually sits across the room from me and stares at me. I catch her starting at me, and she looks away. When she passes out the papers, she sometimes pat my head when she passes. At the end of the school day, she gets near me and talks to one of my friends. When she ended the conversation with my friend, I looked to my left and saw her starting at me. I can't understand if she likes me or not. Please help!!! Is she trying to get my attention by talking to my friend near me?

P. S. (We don't have phones, so we didn't text)