[Vergil abruptly stops what he's doing, head snapping in Dante's direction at the question. Whatever possibilities there might have been for Dante's questions, none of them even came close to that question in particular. For a moment, all Vergil does is gape at his brother, mouth moving uselessly as he doesn't even form a sound to properly sputter.]

That, [he manages eventually, pointing a finger at Dante,] is none of your business.

[Although with how noticably red Vergil is... Well. Dante can reach his own conclusions if Vergil is merely scandalized by the thought alone, the discussion of his sex life suddenly has him easily embarrassed, or if he's inadvertently provided affirmation. Vergil turns back to his tomatoes shaking his head.]

Why would you ask me something like that in the first place? [He holds a hand up after placing a tomato in the other bowl.] And don't give me some nonsense about concern for my sex life right now. Actually tell me why you're asking.

[Despite the demand for an explanation, Vergil isn't angry so much as clearly flustered. Which was likely always to be the kneejerk response to that question. Vergil remains a private individual, and especially so when it comes to more intimate matters of his relationships.]