Combeferre being a very private person and Courfeyrac knowing it. So when they start dating, Courf keeps it rather quiet so as not to alarm him though he’d rather scream it to the Heavens. Well, one day Courf and Ferre run into Ferre’s sister unexpectedly and Ferre’s like “this is Courfeyrac.” Court thinks he hasn’t told her they’re dating when she hugs him and goes “So YOU’RE the boyfriend he never shuts up about. Getting a bit annoying, I think our mother may strangle him.“
And Courf just takes Combeferre’s hand and smiles like the sunshine he is.