A line tattoo for couples is a minimalist yet deeply symbolic design that perfectly fits together when the couple is side by side. 

Each partner has a half of a continuous line inked on their skin, and when they stand or sit next to each other, the lines seamlessly connect, forming a complete and harmonious design. 

This type of tattoo represents the idea that two individuals, while whole on their own, come together to create something even more beautiful and meaningful. It’s a constant, visible reminder of their bond, commitment, and the unique way they complement each other in life.