This girl calls me almost every night we talk like were in a relationship but she tells me that we are not what does this mean

Maybe she hates labels, maybe she is still trying to figure out if you're dating material. Perhaps she is just too flirty... it's hard to say.

This girl calls me almost every night we talk like were in a relationship
She see's you as a friend.

but she tells me that we are not what does this mean
It means she does't see as a boyfriend but as a good friend.

This Girl? Did you ask her to be your girl yet? Maybe that's what she wants. I was the same way. Not cause I would talk to guys meant I was in a relationship with them.
Good Luck :) Ask her officially to be your girl.

She's testing the waters and getting to know you. Go along with it, without pushing or cajoling her. Meanwhile continue to pursue your own interests and activities and don't build your life around her.

Have you asked her out? Hung out with her? I suspect you have to take a more proactive stand by asking her out. If she is unwilling to go out with you then you are just friends.