Mixed Girl Thoughts, Help, here's the story?

I have a friend ( well i call her a friend ) brianna. weve known eachother forever. yesterday i bought her tickets for a show, btw were 14, and then my phone died, and she offered me to stay, but it was too late. i like her, she has a bf, her friends hate me, and she not answering my texts, but she asked me if i could meet her at the place for these tickets, idk how to feel. im nervous to talk to her in school now, kuz her friends, somebody SLAP ME!