A fine question, if a dangerous one for Hades himself. Hythlodaeus smirks smugly, takes both his friend's hands in his own for a few moments as he positions himself before Hades... and then gets down on one knee, disregarding the snow, and begins to recite - a love poem in the Ancient tongue. Though the words would be unfamiliar to passersby, the tenderness and affection in Hythlodaeus's voice (which he does not particularly bother to lower) are obvious enough to make it clear what's going on.