Don Alston called Nelson because he felt lonely after hearing Jack's story. He hadn't called with the intention of having sex with Nelson, but since the second lesson was offered, Don couldn't free himself from the fantasies raging in his mind.
It's not like he was constantly imagining scenarios, but every now and then a scene would pop into his head - more a photo than a short video. Don was kneeling in front of Nelson. Don taking him in the mouth. Nelson's satisfied smile. His finger in Don's butt ...
It was this last photo that appeared in his head very intrusively. Alston couldn't understand why?
The butt was an unclean place. The body's impurities, all waste, came out of it. How can such a place give someone pleasure? How can he feel pleasure when someone puts a finger there?
