I have no friends and feel alone?

ALL my friends dwindle away! Like i had a best friend since kindergarden and now we dont really have fun anymore and are kind of losing touch he dosent come over and I barley go over. I have at least 3 or so friends and each of my classes that we have fun and talk and stuff but when the weekend comes we don't do anything, and they never text me, I text them. I always invite people to do stuff but 80% of the time they don't. And when I try and focus on one person to be my friend eventually they stop talking to me, like they will start off loving me and talking to me first texting me ect. but then they just slowly stop even though I dont ignore them and stuff. My friend from the begining of the year use to talk about me to her friends all the time but now she dosent even talk to me. everyone leaves me within a few weeks or months after meeting me... I feel like im boring but sometimes the people I talk to get really boring. I feel bad saying that but its true :(