In a sense, it was an attempt to reassure her. We had met through an online dating website. I was into her from the first time we met. She was petite, with curling dark brown hair, a white complexion, and full breasts which her black blouse set off perfectly. It was after our third date that she came back to my place, and we made delicious love together.
Afterwards we talked, and she told me that her last relationship had broken up because her guy had started seeing someone else behind her back. Because of that, she was not sure that she could trust another guy very easily.
While we were talking, her head was on my shoulder, her full breasts on my chest, and her hand was slowly stroking my cock, making it hard again. I reassured her that I had never cheated on any woman I had been involved with, totally true, and that she was all the woman that I wanted. To make the point even more strongly I added that I would still want her, even if she slept with someone else.
It was not something that I had planned to say, or had thought through. It was instinctive, and it was more about making her realise how much I wanted her than about being turned on by her being with another guy. But it became something that I repeated, and she started saying that she might take me up on my offer. Just talking about it proved to be a serious turn on, making me hard, and if she said anything about it while we were making love, it would make her fuck her even harder, which she enjoyed.
A couple of months into our relationship, she mentioned a guy called Paul. He was a former colleague, from a previous job that she had had. They kept in touch, meeting up occasionally as friends. What she said, while we were in bed together, was that if she decided to sleep with anyone else, she would want it to be him.
Again, she was stroking my cock while she was saying this, and it hardened even more. I moved between her legs, sliding into her easily, her pussy already wet, and started fucking her, telling her the one condition I was placing on her was that she told me everything afterwards. She promised that she would, and we made beautiful love, a pact having been agreed between us.
It was another few weeks before anything happened. We were in the kitchen, making breakfast on a Saturday morning, when she told me that she had arranged to meet Paul for lunch. She planned to tell him that I had agreed to let him make love with her, and would go back to his place if he wanted to take her up on it.
My stomach churned when she told me. Fantasising about it had been one thing. Hearing her tell me that she was going to meet him that day was something else entirely. But a pact had been made, and I drew her to me, saying that it was fine. My cock hardened. We kissed, and within minutes we were back upstairs in bed, and I was fucking her and coming inside her. After a break, I was hard again, and inside her again. By the time that we had finished, it was too late for her to meet for lunch, and she was using her mobile to apologise to him, and rearrange for the next day instead.
The knowledge of what was going to happen kept me hard that night, and we made love twice before we slept, and again on waking. This time, after coffee, she dressed, wearing a red trimmed bra, panties and suspenders set that I had bought her, with black stockings under her dress. We agreed that she would text me to let me know what was going on, and three hours later, I got her text, saying that she was in his flat. I replied, my stomach churning again, but saying that she shoud enjoy him, and then spent the next three hours or so, waiting for her to come back, and knowing that while I was waiting, a guy I had never met was fucking her.
It was incredible when she walked in, and back in the kitchen she began to tell me what had happened. They had met for lunch in a London art gallery, looking at the paintings after they had eaten. One had been of a reclining nude, and Paul had joked that he would like to see her like that some time. She had been nervous of bringing up the pact that we had made, but took the opportunity to say that if he really wanted to, then she would go back to his place with him.
He took a moment to check that she was serious. Then he took her hand, led her from the gallery, and brought her to his flat. Inside the door, they kissed, and his hands explored her body through her clothes, unzipping her dress, and sliding it from her while they were still in his hallway.