As the title suggests, all my friends were invited to a huge party tomorrow, except me. I feel incredibly lonely and just really sad. To make things worse, my crush is going to the party, and I'm really scared that she's going to hook up with someone (although I realistically don't think is going to happen, but with alcohol involved, who knows). My anxiety has really been acting up, and in general, I just feel really really sad and nervous. I constantly feel anxious and even have difficulty sleeping occasionally. How do I cope with this?