Honesty
I don't mean that a person has to tell me all of the things they have done wrong in their lives or even spout their resume to be my friend. Honesty to me is being yourself. When I am with someone who is comfortable enough to let it all hang out without putting up the carefully crafted scaffold side of themselves... I think, "I have found a new friend." I then reserve all judgment and am free to learn all I can about him or her. It's great when I find more to like.

Confidence
Confidence is not the same as arrogance. Confidence is having talents, spectacular or not, and sharing them without apology. Having different talents than I have makes getting to know a friend even more fun.

Humility
Humility in a friend is the ability to let me serve you. It doesn't have to be the dirtiest job like cleaning a toilet bowl. It could be that when there is a crisis... large or small... you call me. It's nice to be needed.