" Sonya often said she didn't believe in soul mates, but in that union, I believed there was something in my soul that spoke to Sydney's, that this connection between our bodies called to something greater than us, something preordained.
And when it was over, I was reluctant to let her go. I looked down at her face, with her flushed cheeks and damp strands of hair, and thought, Whether it's simply some fierce animal joining of mates or a sublime merging of souls, she is mine, and I am hers. "

― Richelle Mead , The Fiery Heart (Bloodlines, #4)