Thanks. There still a bit more to the encounter:
After he orgasmed, the three of us talked, with both her and him still naked for about 45 minutes. He and I got into an animated conversation about Godel's Incompleteness Proof. She decided to suck his cock as we spoke. He was sitting on the edge of the bed, his feet resting on the floor, while she coiled her body around his, his soft cock filling her mouth. Soon, he was both erect and too excited to speak coherently.
I watched round two. He lasted far longer this time and they tried many sex positions, including 69. She stared into my eyes, as she licked his cock as if it were an ice-cream cone. Once again, he came, this time in the missionary position, his back glistening with sweat. He rolled off her onto his back and she licked his cock, wet and still hard, clean. He had worn a condom the first time, but not the second (at her insistence).
It was about 11pm when we decided to call it quits. He had ridden his bike to the hotel, and it was now cold and dark outside. Since he didn't have a jacket and since his bike lacked a light and his parent's home was over ten miles away, I insisted that I drive him and his bike back to his parent's house. She remained the hotel room, as there was no room left in the car with the bike taking up the back seats, and we set off. It was an interesting conversation, as half of it was spent on the topic of her returning to college; the other half, on sex.
He profusely thanked me for the opportunity to fuck her once again, as dating was close to impossible for him, as he didn't own a car and lived with his parents. The first thing he said to me was an apology for having cum in her at the end of their second fucking, explaining that he planned on pulling out, but it just snuck up on him. I told him not to worry, as she was on the pill. He asked about how I felt about witnessing their romps; did I ever feel anger or jealousy? Had it bother me that he hadn't worn a condom the second time? What did I like best about the event? Why didn't I join them?
I openly answered all his questions, including the one about the absent condom. (She had pleaded with us for him not wear one the second time, and we both relented.) I explained that although it would have been smarter for him to worn one both times, I was glad that he got the chance to feel her wetness. He revealed that this was his very first time he had ever fucked without a condom and that it felt just amazingly good. As to why I didn't join in, I explained that in our arrangement, I was supposed to only watch. I didn't tell him that he was only the first of the many men who would get to fuck her or that I was eager to establish that her encounters with other men were more of a gift that I gave her, not so much one we gave each other.
When I returned, it was past midnight (he and I had continued our conversation after we had arrived at the house). I opened the hotel room door and she was still naked, standing in front of the wall heater. We kissed for an easy ten minutes without saying a word. Her first words to me were, "Please eat me. I need to cum so bad."
I had mixed feelings, as I was eager to see and sniff her unfaithful and just fucked pussy, but I didn't want to encounter his semen. I used my fingers and tried to restrict my tongue to high up above her clit, so as to avoid her wet opening. Her pussy scent and taste were certainly different, mostly due to the condom odor, but I didn't see any cum pour out of her and my fingers exited her just a wet as usual. Perhaps, she had wiped it all away, while I was gone; or, perhaps, he had used up all semen in his first orgasm. I was weirdly relieved and yet somehow disappointed not run into his load. Soon enough, my hesitation vanished and I gave her a proper licking. She had to bite her pillow to stifle letting out a loud scream, as her body quaked.
I then completely undressed and mounted her. I expected her vagina to feel radically different, but it felt no different, save for being a bit wetter and warmer. As I fucked her, I asked her to tell me what she enjoyed most about her two previous fuckings. Her answer was that she loved being stripped naked by him and that she loved feeling his cock enter her and when it spasmed inside her. She admitted to feeling very dirty letting him fuck her, now that we were an item. She then confessed that the second time they fucked, especially without the condom, it felt very natural, even normal, as if she always got fucked in front of me. She openly wondered what it was going to be like when a truly strange cock fucked her; would it feel extra dirty? We continued talking about the event and I came far too quickly—both times!
She relished the sex with him and the sex we enjoyed afterwards. Moreover, she saw my letting her have experience as proof of my love for her. In addition, she was adamant that he had not counted, as he had not move her number of lovers forward. Next, we had to find another man, one who lived far closer to us, preferably one with a bigger cock, as I wanted to feel her vagina loosened.