Sometimes everything in the universe aligns just so and magic happens.
There was just enough bourbon in the eggnog.
And there was a sprig of mistletoe placed in just the right spot.
Watson was just drunk enough and Holmes happened to be just enough to the left so that they simply had to kiss.
Sometimes when everything is right in the world, magic happens...love happens.
And sometimes, a man will pour in twice the recommended amount of alcohol in the eggnog and another man will shift all the furniture around so that there's no choice but to stand in a specific spot in the room.
Love really doesn't happen by magic.
But it's a miracle all the same.