Kai and Molly's wedding crossword

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Across
  1. 2. What phones do
  2. 4. Where it all began
  3. 7. Math whiz and a girl's best friend
  4. 8. Super promises
  5. 9. Where we are right now
Down
  1. 1. The step before this one
  2. 3. The prince of the house
  3. 5. Molly's altar ego?
  4. 6. The real big one