advice?

so my boyfriend doesn't hangout a lot with his friends, but we're together a lot. he still spends time with them but mostly during school and we go to different schools so i can only really see him on the weekends. anyways; he's hanging out with a group of friends tonight and i'm honestly annoyed that he's having such a good time without me and sad at the same time. i don't wanna be "that girlfriend", but we were all supposed to hang tomorrow and they got together before me tonight. what is wrong with me 😨 i don't even want to reply to his texts i'm so weird about it