Rebecca

“The point I’m trying to make is that I am the most unpleasant, rude, ignorant, and all-around obnoxious arsehole that anyone could possibly have the misfortune to meet. I am dismissive of the virtuous, unaware of the beautiful, and uncomprehending in the face of the happy. So if I didn’t understand I was being asked to be the best man, it is because I never expected to be anybody’s best friend, and certainly not the best friend of the bravest and kindest and wisest human being I have ever had the good fortune of knowing. John, I am a ridiculous man, redeemed only by the warmth and constancy of your friendship. But as I am apparently your best friend, I cannot congratulate you on your choice of companion.

Actually, now I can. Mary, when I say you deserve this man, it is the highest compliment of which I am capable. John, you have endured war, and injury, and tragic loss — so sorry again about that last one. So know this: Today, you sit between the woman you have made your wife and the man you have saved. In short, the two people who love you most in all this world. And I know I speak for Mary as well when I say we will never let you down, and we have a lifetime ahead to prove that. Now, on to some funny stories about John...”
― Steven Moffat