The feeling was good that night, breezy weather and music draped around a buzzing crowd, a beautiful end to the holiday. The man, let’s call him Dick, was not a stranger. He lived with a friend who had recently become a lover; I’ll call him Tom. Dick and I had met randomly a few days before and got along well – we had a lively conversation, and parted on a positive note. That was the extent of our interaction, but …