His stomach turned. They got to rescue their mother later. They got to play with her, and have fun and just be a family. Without him. At one point, he might have been Bowser, or some other villainous character-- the one the boys had to save Mia from. But now? Now he was just a stop on their way home. He swallowed and smiled, covering up the nauseous feeling he felt when he thought about it.
At Gino's comment, though, his smile dropped and he immediately looked at his ex girlfriend. He wasn't sure what to say. She was shrugging. What the hell did that mean? Was it up to him to make the decision on whether or not they'd be miserable walking next to each other, pretending to be happy? "I don't know, Sport. It's up to your mother." There. Pass the buck.