I dont know what is up with my friend what would you do?

you're in a tough situation. what i've found is when they're blowing you off like that, your friend has found new people to hang out with. the best thing you can do is try to make new friends and keep in touch with this one only once in a while. she's taking you for granted so maybe you guys could use some space. I say this out of personal experience. I'd go to my old friend's house all the time, and then I realized that I was semi-begging for his friendship. I realized I was more valuable than this so I don't go there anymore. Don't go where you are not respected. Just keep in touch once in awhile and if they want to hang than go, if they don't at least you saved yourself some time.