Recently, Stacey and I reminisced about how the topic of cuckolding came up with us. We enjoyed talking about how we both expressed our fantasy to one another while still in college. We talked a lot about it. We played a game whereby I’d identify a guy while we were in class, walking around campus or at a restaurant and she’d tell me whether he was her type and, if so, why he was her type and how he would fuck her. How she'd dress for him. We role played in bed. I always knew she’d eventually want to fuck another man but at the time didn’t know when. Neither of us expected Robbie (high school senior) to come into our lives. Hanging out at the apartment complex pool as recent college graduates and very much still newlyweds, he immediately took to Stacey. Flirting, innocent touching, playing in the water, drying each other off, etc. She loved the attention and we immediately started fantasizing about him. This was a new twist since before our fantasizing was mostly generic and not about somebody we actually knew or hung out with. Suddenly, it got real. We both knew that she’d fuck him eventually though we didn't say it. I didn’t want to push her though it turned me on just watching them together. When she consented to kissing him and letting him feel her up in our apartment while he visited to watch tv or cookout with us I knew she was getting closer to wanting it. The mixed emotions - sexually turned on, anxiety, jealousy, fear - the feeling was a lot more intense than I had anticipated. One night while we role played in bed, and I asked her if she wanted to fuck him. She simply said yes. We talked a lot about it - set up boundaries and shared our innermost thoughts about how it would affect our relationship. We talked about birth control. After that night their petting increased and she got more bold in how she dressed - loose tops, no bra, bikini panties or no panties beneath a simple dress. He would kiss her and play with her tits and pussy when I wasn’t in the same room. He was very careful to control himself in my presence but I enjoyed watching him flirt and knew he was touching her when I wasn't in the same room. He brought her to orgasm several times with his hands - usually while I was showering or if they were cooking in the kitchen. She rubbed his cock through his pants and enjoyed feeling his big cock inside his pants. One day he asked her to suck him off at our apartment but she told him it was too risky - but she didn’t say no to the idea. She even let him touch her privates at the pool when rubbing suntan lotion on her. It turned me on sneaking an occasional peak at the pool or in our apartment. And she shared the private experiences with me - which only fueled my desire for her. Within a few weeks, on a Saturday morning, he came to our apartment and she suggested I run some errands for her. This is how she announced to me that she was actually going through with it.