Well, they've only been in like, six issues of anything ever, as far as I know, so they haven't had much time to be obvious, really. But I remember them seeming like they were both into Eddie during the Cluemaster kidnapping thing - asking him if he thought they were hot, that sort of thing. I kind of suspect it's something Woods snuck in (that and the body language), totally of his own initiative and possibly without Dixon's knowledge.