Try

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Across
  1. 3. the first movie they went to in a cinema
  2. 4. month that they got together
  3. 5. common cca in eusoff hall
  4. 9. hall in NUS that both stayed in
  5. 10. town that their BTO is in
Down
  1. 1. weijie's brand of smartphone during NUS
  2. 2. athena's first full-time employer
  3. 3. number of semesters that each of them stayed in the NUS hall
  4. 6. nearest mrt of location that they got together
  5. 7. athena's degree from NUS
  6. 8. country of proposal
  7. 11. weijie's degree from NUS