a very cliche phrase:

if we were to live until the age of 100, i hope i'll die at the age of 99 years and 364 days. so that i won't have to live a day without you.

what i personally think,

if we were to live until the age of 100, i hope you'll die at the age of 99 years and 364 days. so you won't have to feel the pain of losing the one you love.