Soulmates

Have you ever dreamed of finding your soulmate? Or maybe you're lucky and think you have? Well, forget everything you know about soulmates and imagine a world where every single person has their perfect other half, without even having to search for them.
Thanks to a groundbreaking invention that promises to eliminate all hate and conflict and generate some sort of paradise most social interactions between humans have become unnecessary. Everyone seems to have just the right person for them to share their life with, just the right field to work and thrive in, living in a perfectly rule-governed and peaceful world.
But what will happen to a world full of people who never even thought of questioning their beloved system if someone breaks that invisible border?