Originally Posted by
90'sCartoonMan
Karen and Mal are new parents, so I guess that explains why they took a step back recently. As for her and Mal's rocky relationship in season 2, I think it's because Karen was trying to grow as a person and discovering her aptitude for science while Mal wanted their relationship to stay the same as it was in high school. Karen had to realize how much Mal means to her, and Mal had to learn to be more empathetic about giving her space when she needs it.
I wouldn't necessarily call Batman nice and friendly. He's respectful to his teammates and the Team (never calling them "kids"), but Batman is often short with people, blunt, and to the point, which makes him come across as cold. We can infer he probably isn't as friendly in an off-duty capacity with the rest of the League while others might be friendlier. When Bruce Wayne tries to convince Clark Kent to take responsibility for Conner, Clark ends up storming off angrily because Bruce didn't handle it as best he could.
Then there's Bruce's love life, a path Dick definitely doesn't want to go down.
There was that one episode where M'Gann, Conner, and Gar went to Rann. Gar seemed to be shipping M'Gann and Conner pretty hard because he was close to both of them.