Jealous :(

Let’s start off by saying that I’m in high school and I walk the line between popular and unpopular. Like I’m not one of the loners, but I also don’t have lots of real friends. I have this one friend though who was planning on doing a group halloween costume with me and another girl. (Shes part of the popular crowd) She cancelled after that because she said she didn’t want her popular friends to make fun of her for dressing up with me and the other girl (the other girls in the same situation as me) We decided sure that’s fine, it’ll be just me and the other girl. I also had invited them both over for Halloween night, because I had nothing else to do. She said maybe. I just found out she’s going to this party and I’m actually really jealous!! I so badly want to be invited to parties and everything but everyone just overlooks me. :( She also was making plans with a big group of people right in front of me in school today and I was not invited. I don’t know what to do, I’m just really jealous, and honestly kind of hurt.