I asked my friend who is a native Chinese speaker and reader.
It's not about friendship.
There's no really direct English translation of the phrase.
It's a blessing - it has to do with good luck and health and that the things that you hope for will come true - kind of like that you will find yourself aligned with good things.... uhm....
It usually is used in home decoration, like maybe it will be printed on red paper and put up on the wall.... it's usually given to people at new year's... it's not a casual thing like a good fortune birthday wish.... and it's not made into jewelry usually, so that's kind of like maybe an American idea to put it on jewelry but it's not a traditional thing to wear that phrase on yourself.
Sorry I can't do better to explain. :(