"I'm sorry I couldn't save you. But I can't live with a ghost for the rest of my life."
Nathan Harris is the best friend, and sometimes boyfriend, of Sophia. The two met when she was still new to hunting and his father saved her life. Being around the same age at the time and both hunters, the two quickly bonded and Sophia quickly developed romantic feelings for Nathan. Nathan and his father taught Sophia all they knew about hunting, seeing how determined she was to learn, and when Sophia had learned all she could she left the Harris' and began to hunt on her own. She and Nathan remained in touch all this time and would help each other out if they were working on cases in the same area.
"You've made my life a waking nightmare since I was a child. You want to take control over my body so that you can get out of hell and create total destruction on Earth. Tell me why I should do anything you say?"
"I told you that bitch couldn't be trusted." - To Sam and Dean when she learns of Ruby's betrayal.
"Is there going to be more of this scintillating conversation? Because if there is I'd rather just go back to hell."