It certainly doesn't hurt matters, does it? Dimitri loves watching the way that Byleth moves beneath Dedue's skilled fingers, he loves feeling the way his hips twitch up to chase the heat of his hand around him. The breathy words that Byleth can barely articulate get out help awaken his own arousal impressively fast.

"Is that so?" he asks, each word punctuated by kisses that are light and caring against Byleth's skin. "Well, I say that I'd hate for things to be over so soon but... I think that's far from the case, knowing us."

These boys can go for hours and Byleth, more than anyone, would know that.