Did you read the last book, they got married. Draco married Astoria Greengrass, the sister of Daphne Greengrass, who was in his year at school, and Astoria and Draco had a son, Scorpius, who was the same age as Ron & Hermione's daughter, Rose Weasley, and Harry & Ginny's son, Albus Potter.
(to the person who answered above. The question asker was quoting Narcissa Malfoy as she bent down to check that Harry had been killed by Voldemort. She did not care at this point wether Voldemort was victorious in killing Harry and only cared that her son Draco who was still in the castle was alive. She knew the only way to get back to her son Draco was to pretend Harry was dead so Voldemort would lead the procession of death eaters back to Hogwarts to show Harrys dead body to his supporters so they knew to give up.)