While there are hints of a potential romantic connection between them, their relationship remains platonic throughout the entire series.
The show focuses on Daria's cynicism and her struggles with fitting in, and Trent's artistic expression and his rebellion against societal expectations. They share a mutual understanding and a bond based on their shared distaste for the mundane and their desire for something more meaningful.
However, Daria's independent nature and Trent's artistic pursuits ultimately keep them from pursuing a romantic relationship. They remain close friends, supporting each other through their individual journeys.