Pansy wasnt quite ready to give up Draco Malfoy. Sure they never really had a serious thing, they were only kids. And she knew she had stronger feelings for him than he did her. She accepted that he broke up with her at the end of 6th year when he became closer to the Dark Lord and after Dumbledore was killed. But what she couldnt help that she still fell for him. And she couldnt stand him being with that Astoria Greengrass, and she is determined to break them up and for him to see that they belonged all along...