And yet, he knew himself and he knew he was the type of person that never called anyone, unless he was absolutely certain the advance would be welcomed. His brain was treacherously negative. He would invent that she had been cold toward him, that she hadn’t even had a class that day, that she had simply wanted to get away from Sam. His brain would insist that if she’d wanted to see him, she would have given him a way to contact her. He would conclude that, to Sadie, Sam represented a painful period of her life, and so, of course, she didn’t want to see him again.