An Immortals Pain

Athena is getting married to her best friend and her world is glowing, but we all know there is no such thing as a happily ever after. When Stefan, her soulmate, is murdered, she is forced to be unaged until she finds her soulmate again. In 18 years. In Athena's world a person ages until they are 18 and stop on their birthday until they see their soulmate. When you do find them you see their birthmark that's invisible to others. Athena and Stefan have been friends for years before turning 18 but when he dies her world is turned upside down. She didn't only lose her soulmate. She lost her best friend. The moment he died, the little trace of youth she lost, found her again. Now every 18 years, her soulmate is magically drawn to her. None of them look like Stefan and Stefan's death turned her cold and cruel. Not feeling love for any of them, Athena stages their deaths and gaining her youth back leaving her immortal and alone. Her murders continue until she sees him. The seventh soulmate.