Three and three ot3s. Voyeurism, dirty talking, and sex game for raydium, Jin x Zuko x Mai, and Fives x Miko x Zahra
Voyeurism: out of these three, Raydium is probably the closest, though I;d imagine it'd involve heavy use of magic to conceal their nakedness, as the three parade naked around. Or most likely, two, leaving poor Callum embarassed, being the only one aware that two naked beauties are around him, about to sneak underneath table and give him a bj,.
Dirty talking: Jin/Zuko/Mai. Though in this case, it is once again the girls who do most of the talking, perhaps knowing that Zuklo's mouth can be put to better use.
Sex Game: Gotta be Polyplay :D Competitive nature of one-upping each other is ever present between the three, and it has produced many records and personal bests for each o them. And each of them did try to cheat, perhaps just to feel the wrath of the other two...