He could guess that question was due, sooner or later. Though he hadn't expected Jim would be willing to ask it out loud. Felix looks at him quickly, trying to gauge what he's thinking. There's a hint of tension in Jim's face, and Felix hides his own stab of worry under a rueful smile.

"I didn't," he confesses, eyes on Jim's with the kind of earnest intensity he gets when he's determined not to say the wrong thing. "When the idea of celebrating came up," he gives a small, apologetic shrug, "I didn't know what I was asking." How many times could that be said of their relationship?

"But I did some research before I came," he adds, "so I have, er- some idea, now." And now his smile's a little less apologetic and a little more pleased, despite himself. He still hesitates before he dares to add, "And more reason to be glad you agreed anyway." Which might be the most overt reference he's yet made to the unspoken rule of this arrangement. You just don't say it.