I have the "Quote Unquote" books, volumes 1 and 3. I LOVE them for things like this! I am tending to use volume 3 more, as it is song lyrics and I am a music nut. Here are a few:
Friends Forever
Face Whatever
Friends Forever Yay!
We're never gonna be apart.
-Friends Forever, Scooby Doo 2
Those were the
days my friend.
We thought
They'd never end.
-Those Were the days, Mary Hopkin
However rare true love is, true friendship is rarer.
-LA Rochefoucauld
Wherever you are, it is your friends who make your world...
-William James
My friends have made the story of my life.
-Helen Keller
Anyhow, PM me know if you need more!