" Ach, woman! He raked his fingers through his hair. "You want me as much as I want you."
"Assuming that's true -"
"It's true."
"- I can't. Not now."
"It's no' your time of the month. I know that."
"Ew." Valkyrie didn't have periods. "You're the only one here with a monthly cycle, werewolf."
- Lucia and Garreth MacRieve "

― Kresley Cole , Pleasure of a Dark Prince (Immortals After Dark, #8)