Now that he had Hermione, Draco no longer returned to the Tower and his constant negativity had gradually disappeared. However, when the school was filled with students again at the end of the holidays, his anxiety returned and his mood changed. He explained to Hermione that even though they were together, he wasn't yet ready to make it official. He didn't want anyone to know about them, not even her friends. She agreed, because she felt how important it was for him.