Solve this!!

12345678910111213
Across
  1. 3. it doesn't have an end
  2. 4. a form of matter
  3. 6. I do this for you all the time
  4. 7. placement team name 2018-19
  5. 12. you make me feel this way always
  6. 13. you after 10 years ;)
Down
  1. 1. written at the end of a function
  2. 2. unforgettable Harry Potter character
  3. 5. synonym of being resistant
  4. 8. a city in Canada
  5. 9. antagonist in movie
  6. 10. something you like on pizza
  7. 11. a musical instrument