求翻译：I have a problem .and I need your help .I always thought i was popular at school. but i just found out that my friends were planning a birthday party for my best friend ,and they didn't invite me ,everyone else in my cllass was invited except very upset and don't know why.I can't think what idid wrong ,I'm very upset and don't know what to do .what do you think ? can you help me是什么意思？

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