Draco responded to anger and frustration in two ways. He either fell into a rage himself, or he got emotional. Given the people involved, the anger had turned to emotion fairly quickly, which wasn't something he was prepared to deal well with. He was actually shaking. "Don't tell me not to worry," he said, tugging Harry in. He locked the door behind him.
"Remember we are in this together." Draco looked sternly at his boyfriend for a minute. "You have dozens who will protect you. This is the original order, and your order. I am expendable." He was immediately talking business. He could be open with Harry, unlike the others who he really didn't trust. "I might have to answer him if he decides to use the marks."