" He tapped my nose with a gray-stained finger, leaving a mark that even I could see out of the corner of my eye.
“Did you just stain my nose right before I have to go out in public?”
He grinned, and nodded.
“I hate you,” I said.
“And I love you,” he replied.

“What’s that on your nose?” Teka asked me. "

― Veronica Roth , The Fates Divide (Carve the Mark, #2)