Is she still my friend?

Sounds like a friend I had a few years ago. She would ditch me for one person या another, even for those she didn't like.

Through knowing her I learned that some people don't have friends, they have people who are of use to them and nothing more.

This may not be the kind of person your friend is, but I do know that आप need to have a talk with them, and find out where आप stand as your friendship goes. Your either going to have a better relationship having talked about how आप feel, या आप find that your friendship is over.
It sucks if it's the latter but at least आप know one way या the other.

I agree with SynsAngel, talk to her and आप know where आप stand. If she goes off with other people and makes फ्रेंड्स with them, then she isn't a proper friend. I had a friend like that, she became a good friend but then she talked to me less and made फ्रेंड्स with someone else, and she did it to other people as well. फ्रेंड्स are people who acknowledge आप and they stay द्वारा your side.

No she's not a friend! Just a sucker for lots of acquaintanceships... Not worth it, but if आप really want to know if the friendship is true... Test her!

Well if this keeps happing talk to her and tell her how आप feel. If she doesn't stop I say it is time to either..
A) Tell your parents about it
B) End the friendship for good