Does this girl like me?

So I was sitting down at my desk and this girl (who i think is pretty cute) sat down next to me acting like she was paying attention to the teacher. There were about 4 other desks that she could've sat in. She suddenly turned to me and started up a conversation with questions like where are you going to college? and etc.. You know the typical how's your life questions. A few years ago this girl asked to see my cell phone and when i went to check what she did she gave me her number. I felt stupid for not texting her at the time (I was a freshman in high school so yea..no game..) Do you guys think this girl likes me? We're going to the same college so thats a plus idk how to approach her though..please help thanks