I consider myself to have 3 best friends, 1 of whom probably comes first, I'm going to be her maid of honor soon etc
Now I have a really close male friend of over 20 years who I consider a best friend. Recently we were together and he referred to another person in this way a couple of times - it took me by surprise, made me feel like a) chopped liver and b) petty for caring. It was like saying 'you're not by the way' & made me think we view the friendship differently to how I have always viewed it.
I admit I never refer to a 'best friend' to all my other friends because I'm mindful I could hurt someone's feelings. Am I right to think this is quite insensitive? I think it also triggers childhood me!