Batman vs Superman: Dawn of Justice coming to theatres in March 25, 2016. In the comic version Batman and Superman run into each other on a cruise ship, when coincidence places their alter ego’s in the same cabin due to a double-booking mishap. In a sharp contrast to the grim conflict they become friends teaming up not only to prevent a diamond thief from escaping, but also to toy with Lois Lane affection who would win…This is a job for Batman, No this is a job for Superman. It took a couple of years later that the heroes get together on a regular basis but than the Olson-Robin team versus the Superman-Batman team were in conflict and the super-sons who were the crime fighting children of both Superman and Batman. So in the end they do become best friends and they both had keys to each other hideouts but the turmoil in the beginning was a rough one.