I'm going to high school this year, straight after the summer break, and when we went on a 'trial day' I met this nice girl who I'd never seen before. Me and my best friend started talking to her, and after a while I was petrified that she might like my best friend more than she likes me. At the end of the day she gave me her phone number, and I texted her right away. It took her three days to reply and all she put was "Hi (my name) yeah it's (her name)" and then she put "sorry". A few days later, I tried to find her on social media, but I couldn't find her so I texted her again, saying I couldn't find her username. All she replied with was "what's urs" and when I put my username in i also wrote "Looking forward to seeing you after the summer break". That was THREE WEEKS AGO, why hasn't she replied? I'm really worried that she doesn't like me. Help?