Does she like me?

I'm currently 15 this year and I have recently told my friend that I liked this certain girl. Let's just call her Anna. When I told my friend that I liked her, I told him not to tell her about my feelings for her. Couple of days later, he just messaged her and said that I liked her. This was what he said, "Hey do you like (me)?" She said no. Moments later, my friend screenshotted my message indicating that I liked Anna and sent it to her. Her reply changed from "no" to "I don't know." The next day at school, she asked me if I like anyone in my class, that was when I confessed my feelings to her. She immediately turned away, blushed, took out a note and wrote that I have just confessed to her and passed it to her friend. The next day, we didn't really talk much but she looks at me sometimes but I pretended not to notice. The day after that day, she passed me a note when I was looking and asked me if I wanted to go to (this place) with her and and some friends. When I got back home, I was thinking of texting her but before I was able to touch my phone, my phone vibrated and I checked it and it turned out to be her messaging me instead. (Btw that was her first time we have ever messaged each other.) She just said 'Hi.' And when I replied, she just said 'Lol'. I asked her what was it that she wanted to say to me but she said 'Nothing.' What does that tell me?