That Andrew likes Neil being vocal in bed -- that’s a key, and Neil intends to use it. This is something that Neil can give Andrew, a thing Andrew likes, that doesn’t involve touching or crossing boundaries Andrew is not yet ready for Neil to cross. Besides, if Neil is good at anything besides Exy, it’s running his mouth. Or: Neil learns that Andrew "I'm An Instigator At Heart And So Are You" Minyard might just like hearing Neil express not only his consent, but his enthusiasm, when they're in bed.