Answer:
I know a word of letters three. Add two, and fewer there will be!
What gets wet while drying?
He has married many women, but has never been married. Who is he?
I'm sometimes white and always wrong. I can break a heart and hurt the strong. I can build love or tear it down. I can make a smile or bring a frown.
My first is in wield, sever bones and marrow. My second is in blade, forged in cold steel. My third is in arbalest, and also in arrows. My fourth is in power, plunged through a shield. My fifth is in honor, and also in vows My last will put an end to it all.
I am rarely touched but often held. If you are smart you'll use me well. What am I?