求翻译：很多事已经变了，只是不说而已，我发现你好像变了。没以前的那么关心我，有时候我真的很不开心，我只是不知道如何去说......是什么意思？

Many things have changed, just do not say it, I discovered you like changed. No previous concern me, sometimes I really am not happy, I just don't know how to say ... ...