Poison
"I really want to kiss you," said June. Mai scoffed and shook her head. "What? It's not like your dearest prince is going to ever know."
Mai turned away. This was the worst wedding in the history of time. All Mai wanted was to stand outside and freeze to death in the snow while Zuko played with his friends and ignored her, but she was followed by a half-drunk bounty hunter.
Mai hated Katara and Aang more than she ever had in her life.
How dare they try to live happily ever after and invite the whole world to their celebration.
"Consider my lips poisonous," Mai said.
"Well, I have an amazing resistance to intoxicants."
June finished her drink and kissed Mai on the lips.
It was hot enough to have melted the entire South Pole.