There's a Price to Pay From Every Lie you Say

I'm a good listener. I listen to friends problems and try to help them out, or I just sit there and listen to them vent. But sometimes I have problems myself and lately when I try to tell them to my one friend she seems to ignore my requests to speak and vent. Right now it is bothering me a whole lot so I am telling no one. Well, I am telling my handy dandy blogger. I recently have been having these ideas that she has been keeping her distance from me and are keeping things from me. I know I don't need to know every detail of her life and I don't mind it because she usually just belts it out anyway. But I don't want her around me because she sends negative energy and she doesn't get my humor- she takes it wayyyyy to personally and I just found out quite recently that she has been talking behind my back. Now I know her to be the gossiper- Miss Silent little girl but has a big mouth, and gets everything her way- but i didn't expect her to turn her back on me. But she acts like Miss Innocent and I feel like she is two faced. I didn't think that at first because she told me how rough it was growing up and she felt like no one loved her and I felt like I could be a better friend to her since it seemed like no one else had.. But, I'm thinking, maybe it was her making the wrong mistakes to cost her some friendships. I don't know what to think of her anymore. World, what should I do?