"My Best Friend"

I have a cousin named Karen, and she is almost 14 years older than me. I used to spend a lot of time with her when I was a little girl, and I used to refer to her as "My Best Friend". I don't really know why. However, when I was about 5 or 6, she moved to New York, and I apparently forgot about the whole "My Best Friend" thing, because when she came back from New York a few years later, she wasn't my best friend anymore. Of course, the more interesting, but totally made up by me, story, is that she was my best friend, but then she went to New York and left me, and I was mad at her, so that's why she wasn't my best friend anymore. But that version isn't true. Karen is a wonderful human being, and I love her a lot, and I always look forward to seeing her.