Anakin wasn't always the observant type mostly because he didn't pay attention to things that weren't directly involving him. However, the way Luke and Mara stood next to each other really stood out in his mind. He looked at him with an almost curious expression. But he didn't comment on the matter. If it bothered him too much, he'd just corner Luke later and try to get him to talk.

Instead he glanced to Obi-Wan. "Master, I've been meaning to speak with you. I wanted to apologize for the way I've been... acting lately. I just have a lot on my mind." He stated plainly, all the while keeping an eye on Luke and Mara out of the corner of his eye.