My Brain!!!!

Help me, O Friends List, you're my only hope.

I'm trying to track down the source of a half-remembered quote so I can look it up and use it! The context is someone (I can't even remember if they're male or female) telling the main character about what they know. One of the lines goes something like:

"I know a hundred words to make someone love you forever, and five to help you part from them as friends."

Only, you know, more poetic than that. I have half an idea that it's Gaiman, but can't find it. I tried Shakespeare too, but the language isn't right, although the tone is very Midsummer Night's Dream. I'm sure it's part of a longer speech, listing all the magical things the character can do, and not being able to find it is INFURIATING!

Does it ring a bell with anyone? Anyone at all? Help!

Found! With thanks to badly_knitted. It's from Geometry of Shadows, which is in S1 of Babylon 5 and is said by a Technomage:

"The true secrets, the important things. Fourteen words to make someone fall in love with you forever. Seven words to make them go without pain, or to say goodbye to a friend who is dying. How to be poor, how to be rich, how to rediscover dream the world has stolen from you."

Phew! I may sleep tonight after all ;D