Just like before, Dr. Harleen Quinzel meets the Joker at Arkham for the first time:
And then, he does the one thing that makes her fall in love with him:
And then Harleen breaks down and cries upon seeing the severed pinky finger of the slain crime lord(?).
All in all, with a few differences (such as the apparent chemical bleaching of her skin), Harley's DCnU origin is more of the same.