Even though there seem to be no reason there is ALWAYS a reason. They may not want to admit it and you may secretly have a feeling about what it is. My best friend and I were in a musical together and we both like to sing and I had a bigger part then her, and throughout the musical I could feel us growing further apart. It hurt me a lot, and then she got into the talent show and after she came up to me and said, "HAH! we are even." I then figured out why she was mad at me or more jealous.
