From Cain's side, it really is just as simple as that. He wanted Abel to read it, to be able to study his reaction when he did, and nothing bad happened. All good for him as far as he's concerned.

"Yeah, good idea." He rubs his hand over his face for a moment. "And—... let me know if you're gonna show it to anyone else, yeah? Got enough people here that I barely know knowing too much about me as it is."

He doesn't think that's going to be a problem, but it doesn't hurt to straight up ask either.