Friends or so-called friends

I have a friend who calls me damn near every day and we usually talk about problems she's having and I really dont' mind helping her out. But the thing of it is: all she ever does is switch how she feels about people and always cries and talks about herself. As I said before, I don't mind helping her out. But sometimes I need an outlet and try to go over my problems. But she just gives me "Oh, yeah, that sucks. Now back to my problem". Well, all I ever hear from her at the end of the conversation is "God, JP, you're so great! The best friend I ever had! I don't know what I'd do without you! I love you so much like a brother, etc." Well, if you care so much and appreciate me, why do you cold shoulder me when I have a problem? Hmmm...I wonder why?

Well, the question is: How many of you have a friend or so-called friend just like this?