He would bray softly, at first, when any of them came around, and grow increasingly louder if they didn't come to see him. They were all sorry that he...couldn't sire a foal, because of the way they loved him, but, since mules are sterile, and unable to reproduce, because of being hybrid a****ls, it was impossible. They would cherish him for the 15 to, at most, 25 years they had him, but knew they would, eventually have to let him go. He was the third to take his place in their hearts. The first. She seemed a little bit nervous, but happy. Before I left I told her to remember the safe-word would be ‘red’, just in case I went too far.Saturday came; my parents were out the house so I was alone. I had all sort of ideas in my mind. I wanted to make her orgasm, more than once; I wanted her to have the best night of her life! I got a load of things ready, ropes, chains, candles. And a lot more, I even called a few of my mates round. Including a girl. This was going to be one hot night! I got. She seemed to be in a class of her own. She was always smiling and looked beautiful even in her uniform. I wanted to get to know more about this woman. She had the same bubbly personality I remembered Sharon having.I asked her if she was staying overnight in Dallas where we were heading and she said she was. When I asked her if I could see her that evening she said in the nicest voice that she was sorry but she didn't date customers. It was a rule she set for herself. She didn't want to get. And with that she delayed the hold on my index finger and slid her fingers along mine. She said, "What’s your name?" Mike" I replied, with an obviously weak voice, which she noticed, and I cleared my throat immediately after, this brought a smile on her face. She said, "Want to come in for a drink?" With that I replied, "Erm, yeah sure, I guess so."As she led the way inside, I noticed her amazingly firm ass, and her cheeks gently bumped up and down as she walked. By now thinking about her.