Rob couldn't help the smile. He knew he shouldn't, but he couldn't help it. There was something good about seeing his mother even as young as she was, still looking for herself and for her place with the Winchesters and in the world, something good about seeing her so very protective.
"You can, but I don't know much she'll tell you. She might tell you everything - as she knows it. Or she might tell you to let it be - for your own good. She doesn't want you hurt." His hands went up. "Not a threat, just saying."
He shrugged. "It will hurt. If you keep digging at this, and I don't want you to be hurt either." He gave her a slight smile and a hint of puppy dog that was definitely his father's.
"Just accept that I'm round, and that I helped Mary and her not so dead but was definitely dead boyfriend. It doesn't need to be more than that." He was probably digging his own grave, yet he didn't want her to push. It would mean heartache and confusion...for everyone.