* Karen and Dan had a complicated relationship throughout the show. Their relationship was marked by intense passion but also deeply rooted in lies, manipulation, and a lot of hurt.
* Dan was responsible for the death of Karen's husband, Keith Scott, which created a huge rift between them.
* Dan and Karen briefly rekindled their relationship in season 2, but it ultimately ended badly.
* Karen found happiness with Lucas Scott in season 4, and Dan continued to struggle with his past and his demons.
While they remain connected through their shared history and their daughter, Lily, Karen and Dan never actually rekindle their romantic relationship in season 4 or any other season.