You don't...! / I don't want you to...!

Hi teachers. What would be a natural continuation of "Let me just make one thing very clear..." in this dialog? "You don't...!" or "I don't want you to...!" or maybe something else? Thank you in advance.

Woman: What did you tell them?

Man: I just told them I think you should get yourself another boyfriend.

Woman: Right. Let me just make one thing very clear -- you don't discuss me and Mark with them, all right?! / I don't want you to discuss me and Mark with them, all right?!