In your world, everyone has a soulmate. All you have to do is look at his mark and if they match, you are soulmates. Girls have marks on their wrists and boys have marks on their ribs. When you have a soulmate, your right eye becomes the same color as your soulmate's eyes. When two soulmates are near each other, their marks begin to glow. to soothe the burning of the mark, you need to kiss it