Decoding our puzzling relationship

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Across
  1. 2. Escaped it but it caught me eventually
  2. 3. Worst instructions
  3. 5. Maps in the dark
  4. 8. Running in circles
  5. 10. Fastest in the world
Down
  1. 1. Your replacement to keep me happy
  2. 4. Clash
  3. 6. First gift ever
  4. 7. Savior of our relationship
  5. 9. Your favorite philosopher from the 90s
  6. 11. Forests and Oceans