What Makes a Best Friend?

I don't have a best friend but in a friendship I definitely look for someone who is honest with me (but they don't use "honesty" as a cover for just being rude). Someone who will be there for me when I need them no matter what is going on with me, because I would always do the same for them. Someone I click with and feel comfortable around, where we can vent to each other but we still laugh about it and make jokes. I look for maturity but not rigidity, and playfulness but not carelessness. Someone who I can exchange advice with.

I want something who understands, be patient and help me through to be the version I wanna be. Also to love all nature. Basically someone who doesn't exist for me, I don't think.. May as well try creating a tulpa.