I had a 'falling out' about a year ago with my Best Friend (or so I thought) who was also my roommate at the time. It was complicated, she had been avoiding telling me things about a guy she was dating, (because he was a friend of her recent ex of 6 years) and she was hiding it from him and still seeing him 'casually'. But she didn't have a problem telling another mutual friend of ours of the relationship, which started an air of dishonesty in our home. Then one night a group of us attended a professional sporting event. And after a few drinks, she and I got in an altercation..