I have a friend that I met at school; we became fast friends because we were in the same class. We've known each other for almost a year, yet I often feel we're not friends at all. Lately she has seemed extremely fake and insincere around me. She's obviously bored when I talk and does not talk to me outside of class. To be frank I would prefer it if we were no longer friends, but I have no idea how to go about it since we will still see each other on campus (it's a very small university).

To make matters worse, my best friend from high school was visiting, and my friend decided to tag along for dinner. She got embarrassingly drunk and ended up sleeping with him that same night. I later spoke to my best friend from high school about it because it bothered me a lot; he apologized profusely. But the situation didn't sit right. We're a few years apart in age, going in different directions in life, and have next to nothing in common. I've since gotten over our initial bond and now get extremely annoyed whenever I see her. How do I go about breaking up with her? Do I just play nice until we never have to see each other again, or should I confront her?

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