User blog comment:Thailog/Ep. 207 "Depths" discussion/@comment-41.203.255.36-20120610062723/@comment-31.205.62.53-20120611012905

I think it definitely implied that they had some sort of romantic relationship between Auld Lang Syne and Happy New Year. It seems to be over but ended on good terms. Probably bc Zatanna is a bit boring.