User blog comment:Zergrinch/All about Shipping/@comment-5553705-20121029232122/@comment-4928331-20121030000255

I don't know. Five years back, Barbara seemed rather jealous when he said hello to Artemis. In the comics, she had a smug look on her face (the others weren't so whelmed) when Zatanna and Rocket kissed Nightwing. Finally she took the mickey out of him when the girls were flying to Bialya.

There is something there!