I have a few that are in the category of "best".
I'll tell you about Noah. I was familiar with him. I went to school with his older brother.
Anyway, Noah found religion when he was in middle school.
When he began High School I used to witness to him about the Holy Ghost.
We had a Phys. Ed. class together. We both would not dress out often. The instructor would assign everyone a fence post to lean against.
One day I told Noah, "If you come to the fence I'll pray for you so you can receive the Holy Spirit." I had to use terminology that he was familiar with.

Anyway, The next yr Noah began to attend church with me.
We are very close. He has crossed over from "best friend" to "brother". We share everything, our struggles, etc. Encourage, pray for each other. And sometimes I'll take a tie of his... if I'm in the mood to wear a tie.
I have another... who is a few yrs younger... and one who is a newly wed. He can't come out to play anymore.. so it's different.