Charlie Cochrane - Mysteries with a dash of slash, romances with just a pinch of spice

Been reading a Raffles short story in a collection. It contains a line I've been trying to locate for ages. Remember, Hornung is supposed to have based A J Raffles on a real person, George Ives and one might guess that art imitated life.

Raffles and Bunny are alone in a cabin on a ship: Bunny isn't happy with how he's been treated.

"The fact is, Bunny, I didn't mean you to know. You - you've grown such a pious rabbit in your old age."
My nickname and his tone went far to mollify me; other things went further but I had much to forgive him still.

And what, prithee Mr Hornung, are those other things? Cos I've got a pretty good guess.