I don’t think I have ever said it to you, but you have been a great addition to this family.
You treat my parents with the same respect and care you treat your own. My children adore you; they call you the cool uncle. And your children look up to you with such respect and admiration, as if you were a superhero.
My sister absolutely adores you and we can all see that you adore her right back.
And to me you are more than an in-law; you are a true friend and a real brother.
I wish you all the best on your special day.