I don't know how many people might read this, but I'm documenting it anyway as much for my own benefit as well as anyone who might chance upon it.
The short version is I just came out to my best friend, and he was amazing about it as I knew he would be. I just wish I'd not been a complete twat about this for so long and just told him sooner.
He is #2 in that someone else knows, but that was necessary - it's my gym partner and I wanted to tell him before he got locked into him gym contract in case the idea was too weird and freaked him out too much that he wouldn't want to train with me. Extreme, yes, but we know the reactions of some people are disproportionate and I thought it would be considerate to give him a heads-up before he spent all his money. He was also okay about it, so I'm 2/2 thus far.
But #2 was much more important. I've known him since the 2nd day of my freshman year at the University when we were allocated a shared bench in the Chemistry laboratory and we've been friends ever since. We went through undergrad and Honours together, started our Master's and PhDs together in the same lab and he's a shoo-in for Best Man at my wedding should I ever get married. He's thousands of miles and six time zones away in Australia at the moment doing a post-doc stint in Canberra, but he is still and will always be my go-to guy for just about everything.
So telling him was an important step. I have other older friends who are still locally based and whom I still see frequently - pretty much weekly, one way or another - but they can wait. In part I'm a little worried about them, for various reasons, which is why I'm happy to wait - well, happy enough. I'm taking this bit by bit.
Anyway, this was a big step for me. And kudos to #2 for his response to it.
>>> Your revelation has changed nothing between us! You are still awesome and I still love you and I value your friendship.
And that says all that really needs to be said.