Peter smiled. "Yeah, I don't think you ever found out half of what we got away with," he said. "You or the professors. Well, not until.." Until she'd married James, but she hadn't done that in her world. He tried a different tack. "I mean, you've heard a lot of stories in my world. I don't know how many you've heard."
He ran a hand through his hair. "I'm trying not to blame her for leaving," he said. "But I still feel left behind. And I think I'd be happier if I could just sort of... let go of that. But I don't know how to do that, not really. I could figure it out if she were here, but she's not here."
If he were truly honest with himself, there were only three things preventing him from pulling away from the idea of his wife. He felt left behind, he wanted to move on, but-- first, there was Juni. He didn't want Juni to think her parents didn't love each other or that he had ever wanted to leave Petunia back home, because he hadn't. He didn't want any of his other kids to think that if they ever showed up here, either. Second, there was the idea of how guilty he'd feel if Tuni ever showed up here again. She likely wouldn't remember leaving, and she wouldn't understand why her husband had moved on. And third... third, he was afraid that wanting to move on made him a traitor. He wasn't like the other versions of himself, who had betrayed their friends. It wasn't fair that he'd been put in this position, where he had to betray someone he loved to make himself happy. And it wouldn't get her killed, and she might not ever know, but Peter would know. Others would know, too, but they were quicker to give Peter the benefit of the doubt than he was to give it to himself.