I've a couple of female "friends"[1], and generally when talking to them I often feel all they're doing is telling me how right I am to feel in such and such way, frequently highlighting the differences between "us" and "them", whoever "them" might be, whenever the opportunity arise. (I suppose you'd call that 'gossip'). I also find often their opinions aren't decided till they figure out everyone else's, as if a fact cannot be correct until it is agreed on by other people. And when I speak confidently about a non-conformist view, they're often reluctant to outright disagree with me until they're sure my view is non-conformist, which might be weeks later when they suddenly bring it up (I assume after having quizzed all their friends).
I've been called a "best friend" half a dozen times by other men in the past year or two, but I've only got one best friend myself, who I've known for close to a decade, and we talk most days of the week. I think one of the most important qualities in a close male friendship is to mean what I say and say what I mean, even if no one would agree with me, even if it offends and hurts feelings. I think that is the stuff male bond is made of. It's hard to feel closeness when a friend is hiding what they really think about me from me[2]. To maintain the closeness of a male friendship, it's also important I put it above any romantic relationships I develop with women, even, and especially when, the women in such relationship puts pressure on me to become closer to her than to my friends. If I was "Matt" in the article, and if the author was my best friend, and a very important one at that, I would rather divorce my wife than move, if the move would endanger the friendship I had with the author. Only this willingness to sacrifice would ensure the strength of the bond in the friendship[3].
[1] I don't consider any female as "friends" even if they think I'm theirs, because of [2].
[3] It is also my opinion that "following" my wife wherever she goes and agreeing with her every word would reduce her attraction for me somewhat. http://www.telegraph.co.uk/science/science-news/10524035/Hap...