"How do I love thee? wondered Orion. "Let me see. I love thee..." — Eoin Colfer quote meaning

How do I love thee? wondered Orion. "Let me see. I love thee passionately and eternally...obviously eternally-that goes without saying." Holly blinked sweat from her eyes. "Is he serious?" she called over her shoulder to Foaly. "Oh, absolutely," said the centaur "If he asks you to look for birthmarks, say no immediately." "Oh, I would never." Orion assured her. "Ladies don't look for birthmarks; that is work for jolly fellows like the Goodly Beast and myself. Ladies, like Miss Short, do enough by simply existing. They exude beauty, and that is enough." "I am not exuding anything." said Holly, through gritted teeth. Orion tapped her shoulder. "I beg to differ. You're exuding right now, a wonderful aura. It's pastel blue with little dolphins." Holly gripped the wheel tightly. "I'm going to be sick. Did he just say pastel blue?" "And dolphins, little ones," said Foaly.