Body heat meme could work for the whole shippy aspect of it. There's also the surprisingly gentle meme that went up which could also work for them. Especially if along the lines of Noctis and Luna's marriage going through, could be the wedding night which would be why the both of them are around each other, Ravus off secluded on his own on the balcony or something; Ignis being the one company he doesn't mind having. An idea maybe??