很多人因此犹豫了，退缩了，胆怯了，怕付出的爱得不到相应的回馈。人们因此不再给予爱，封闭自己，以防受伤。

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Some people hesitate, hold back, and fear not receiving love back. People began to stop giving love, and people shut down their hearts to protect themselves from getting hurt.