As It Appears

A century or so ago, the government began inserting newborn children with a chip. It wasn't a means of regulation or control, but to help everyone find their other half. It got rid of the centuries of bias based on race, sexuality, and class to connect the two- and in some rare cases more- who best suited the other. The "Soulmate Chip" is what they called it. The chip, once safely implanted, would form a mark on the soulmates arm.
The first part of the mark, usually something small like a line or a circle, appeared when both soulmates had their chips implanted. Some soulmates had the mark appear the day they were born, while others had to wait until their other half was brought into this world, much like he did. From there, a new portion of the mark would appear any time the soulmates were together, or well within a few hundred feet of the other. When the soulmates shared their first kiss, the black shape that related to an interest of the soulmates that had formed over the time they had spent together would complete. The next time the mark changes is when the soulmates consummate their relationship, adding color to the simple black figure.