Justice League #12 Put The New 52 Superman And Wonder Woman Into A Relationship
The New 52 brought a lot of change to the Man of Steel and one of them changed something that had been around since the beginning. For years, it was always Superman and Lois but in the New 52, starting with Geoff Johns and Jim Lee's Justice League #12, it was Superman and Wonder Woman. This was a massive change from before, as the two characters had never been anything more than friends in previous continuities.
The two became one of DC's most powerful couples, staying together for the remainder of the New 52, even getting a co-starring series. While it was certainly a bizarre change for some fans, it made sense in the context of the stories being told.