You left Draco to search for horcrux with the golden trio you checked your phone to see texts from Draco :

,,I knew this would happen. Because it’s you who belonged to their friends group. And now you’re gone. Somewhere out there,risking your life for fucking potter and these goddamn horcrux. And I’m here. Without you. Wearing this disgusting mark on my arm. I knew this would happen and I have every second of it. I don’t know what to do. I need you”