[Mello has an intense dislike for verbal caginess and circumlocution when it's directed at him. Beyond is smart to take a direct approach - it leaves Mello with a more agreeable temperament for cooperation and disclosure.]

He didn't, exactly - not here, anyway. He revealed himself to me, once, when I was still a child, and Sharon knows who he is because I told her.

[There's more to both of those stories, of course, but Mello waits to see how the first parts are received before venturing further.]