While Draco Malfoy and Pansy Parkinson were both Slytherins and close friends, they never got married. There are a few reasons for this:
- Draco's feelings for Astoria Greengrass: Draco ultimately married Astoria Greengrass, indicating that he had developed feelings for her and chose to pursue a relationship with her.
- Pansy's personality: Pansy was known for being ambitious and somewhat manipulative, which may have not been the type of personality Draco sought in a wife.
- Their friendship: While they were friends, their relationship was primarily based on shared house allegiance and common interests. There is no indication that their friendship ever developed into romantic feelings.
It's important to remember that the Harry Potter series doesn't delve deeply into the romantic lives of its characters beyond the main protagonists. Therefore, there isn't a definitive answer to why Draco and Pansy didn't get married.