In this Universe, there are two types of mates: chosen mates and true mates.
They are mates that choose to be together. They can mark one another through a bite. Although chosen mates can mark one another, the bond is not permanent, and it can be broken if the couple chooses to do so. Many chose their own mates due to the difficulty of finding their true mates. The mark of chosen mates appears as a bite on the neck.
True mates are made for one another, which is considered a blessed union. The bond between true mates is raw and powerful, very hard to resist. Once true mates mark one another, they are bonded for life, and the bond cannot be broken. The mark of true mates appears as a bite on the neck and a permanent matching tattoo on the left side of their chest just above their heart. Each couple shares a unique mark.