Idea

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Across
  1. 3. name of funny uncle & father; 22nd
  2. 6. name of a significant other; 20th
  3. 7. not this; 12th
  4. 8. boogie woogie; 10th
  5. 9. film; 5th word
  6. 13. evening; 14th
  7. 16. movement to protect our planet; 9th
  8. 17. eastern standard time; 17th
  9. 20. article; 4th word
  10. 21. name of lovely cousin; 24th
  11. 22. 3 + the time when the bonhomme n heure used to come; 16th
  12. 23. belonging to a gender; 7th
  13. 25. on the subject of, concerning; 6th word
  14. 26. all; 11th
  15. 28. in the company of; 18th
Down
  1. 1. important; 28th
  2. 2. name of lovely engineer cousin; 21st
  3. 4. name of devoted and kind aunt and mother; 23rd
  4. 5. belonging to every human, term used in law; 8th
  5. 10. not this plurial + question mark (last word)
  6. 11. desire; first word of the sentence
  7. 12. name of crazy funny aunt & mother; 25th
  8. 14. article; 27th
  9. 15. article; 15th
  10. 18. day of the week; 13th
  11. 19. article; second word of the sentence
  12. 23. see; 3rd word
  13. 24. myself; 19th
  14. 27. name of grandma; 26th