another vent

so uhm now I'm in high school , I find that having friends are pretty much important but the problem is I don't have anyone close to me in school. I find it hard to get around for example like if we do pair work I would not have anyone to pair up with sometimes. Its not like I do not have friends its just that my friends are not close to me I just feel like the backup plan to them so if their best friends are absent then they would come talk to me other times we treat each other like strangers. Or other times they would only come to me if they want to vent or they are bored. I feel like I'm not important from they way they treat me. I just don't know what to do..