I have three friends I've had over 20 years. T, Mick and Ronne. They have always been there for me and me for them. I never have to worry about my relationship with them. If I need to talk, vent or whatever those are the three I would go to.
I have other close friends, but some of those relationships come with conditions. Those three there are no conditions. The only folks that are closer to me than those three are My parents, My boyfriend or my older brother.