1. Adding their wifi network your phone
    Auto-connect, obviously
  2. Shared Netflix/Hulu account
    Bonus points for your own Netflix profiles in the same account
  3. #mcm/#mce/#wcw/#wce
  4. Delete all the dating apps
  5. Tagged in photos with them
  6. Finding a show you're only allowed to watch together
  7. Adding/getting added by their friends/fam on social media
    Bonus points if it's before you've met IRL
  8. "Love"-ing their Facebook posts
  9. Shared iCal/Gcal