I cannot bare this world without you,
But I cannot live in this world with you. (x)
In Slavic Mythology, Kupalo and Kostroma were twins, children of the gods Simargl and Kopalnica. One day, they went to the river, despite their mother’s warning, to listen songs of the mythological bird Sirin. However, the Sirin’s voice was enchanted with a spell that made people forget everything and then it took Kostroma away. She and Kupalo were separated for many years until they met again, when the girl was walking by the river with a flower crown in her hair. Wind threw her flower crown into the water and it was then caught by Kupalo, passing by on his boat. He gave it back to Kostroma and, as a tradition, that gesture meant that he was now to marry her. They fell in love without remembering each other and got married, but the gods, angered by their decision, told them the truth and because of the shame they killed themselves. Kostroma drowned herself in the river, becoming a forest mermaid and Kupalo threw himself into the fire. But the gods, seeing what their anger had done, brought them back to life, not as people but as a flower that is now called Ivan-da-Maria. In this tale it’s also mentioned that they both were made gods: Kupalo became the god of the summer sun and Kostroma, the goddess of fertility.