In 2010, the storyline Batman: The Return of Bruce Wayne saw Bruce travel through history, eventually returning to the present day. Although he reclaimed the mantle of Batman, he also allowed Grayson to continue being Batman as well. Bruce decided to take his crime-fighting cause globally, which is the central focus of Batman Incorporated. DC Comics would later announce that Grayson would be the main character in Batman, Detective Comics, and Batman and Robin, while Wayne would be the main character in Batman Incorporated. Also, Bruce appeared in another ongoing series, Batman: The Dark Knight.
So Jean-Paul came up with the armored look, which, to be frank, is not all that bad of a costume in general. It's just not a good costume for Batman. That said, it also served as a strong excuse for what happened to Batman so that people would not guess that there was a new Batman patrolling Gotham. In other words, everyone saw Bane throw Batman to the ground after breaking his back, so it made some sense for him to return wearing a suit of armor and beating up Bane.
Harley Quinn: Best known as "The Joker's Girlfriend", Harley has had occasional romantic encounters with Batman, most notably her kiss with him in the episode Harley's Holiday from Batman: The Animated Series. Recently, in the The New 52, there have been a couple of stories in which Harley became infatuated either with Bruce Wayne or Batman. These attractions appear to be entirely one-sided and Batman has shown no signs of attraction towards Harley.