I know it's fun in fics but I truly don't think Shane/Ilya would be that open about their sex lives in the Centaurs group chat, they'd really want to keep it professional, but I do think it would take the Cens like half a season to notice that they often both went radio silent in the chat at the same time or disappear from a party at the same time. So the joke is that they're leaving to have sex. They're not texting back because they're having sex. But it's really not serious, they're probably just having lunch without their phones or watching Netflix in the hotel room. Like yeah it's funny to wiggle their eyebrows suggestively when Shane/Ilya come back from the bathroom together but obviously they weren't hooking up in the bathroom, that would be unhinged.
Except, you know, they definitely fucking are.
