You can tease me in private. All four of us will know what is the quickest way to provide a Servant with mana, but the polite thing to do is to not assume that's what is happening. After all, it wouldn't be good if we assumed those two-

[...no. He can't think about Ango and Artoria having sex. He refuses. They just hold hands too.]

...

They. They should beholding hands for that. And nothing more. And we should act as if nothing else is happening, much like they will be doing.

[Do not take advantage of the future king, Artoria.]