"I know something about not wanting to be tied down, that's all." She smiled, pressing her lips against his neck. "I'd have called you stark raving mad if you told me I'd ever have even much interaction with kids, let alone sort of help with one." But the simple fact was, it had touched her when he'd called her Mum. She knew about faking emotion - he hadn't been faking any of it at all. And, bless Aaron, it was probably fairly obvious to him.