Laced Together

In a world where every person has a perfect match, a soul mate to spend the rest of their lives with, without having to find them through trial and error would seem perfect right? But even the most perfect future has flaws, and human being themselves may be the biggest flaws. Even with a guarantee that you will never grow old alone, there is still doubt, even hundreds of years after the pendant system has been implemented. At birth every person is given a pendant, a necklace with a near unique charm on the end, only one other person in the world has the same pendant, and that person is your soul mate. There is no question, they are bound to that person for life, any thing else isn't legal, no exceptions.