It was the first time I saw my wife with another man. She's a lithe 28 year old 5'8" blond with small firm breasts and a nice tanned and toned body. She keeps her pussy shaved. Our first sexual experience involving another person was a threesome with one of her old college friends who is an attractive brunette. I had the time of my life with those two and owed my wife an experience with a man of her choosing.

While on vacation in Mexico, she took an interest in a Brazilian man in his mid twenties. They hit it off at the bar, sharing drinks and doing some dancing. A couple nights later and she asked me if he could be the one. I agreed but she wanted me to make the arrangements but I felt awkward about it. I told her and she said she would talk with him but didn't want me there. She thought he would be more receptive if I was out of the picture. After he hooked up with us at the bar, I told him I needed some air and that I was going to take a long walk and just hang on the beach for a few hours and I asked him to watch after my wife.

I wasn't thrilled about her trying to get together with him alone but I owed her. I did go for a walk and about an hour later I checked back and they were still at the bar. They were pretty close though. They were sitting close. His hands on her thighs, hers on his chest, their lips an inch away as they talked and touched. He was definitely interested. As I watched I saw them touching in ways that told me they were into each other.

I texted my wife and asked her what the story was. She said that she was going to invite him back to the room. While I watched I saw their lips touch and she was giving him a deep passionate kiss which he returned. His hands were on her hips and ass and their tongues were exploring each other. She was whispering in his ear and he looked nervous but willing. A few minutes later they left together.

An hour or so later I quietly let myself into our room and peeked around the corner to our bed. My wife was on her back with her legs spread wide with him on top of her rolling his hips sliding his dick in and out of her. She was really enjoying it moaning softly as he fucked her. I watched for awhile as he picked up speed driving in and out before fucking her hard. I watched as she gritted her teeth and had an orgasm while he continued fucking her. A few minutes later he started saying oh yea and pumped her fast then ground his dick into her as he came.

While watching him slow fuck her after he came I realized he wasn't wearing a condom. I hadn't even thought of it until then and I was startled knowing my wife has allowed him to cum inside her. While she hugged him to her and he lay on top of her catching his breath I snuck out with mixed feelings. I mean it was sexually arousing to see my wife with another man who turned her on but I also felt betrayed because he had shot his load into her without protection and now his cum was inside her. It was a strange feeling for sure. I slept on a beach chair for a few hours before heading back to the room where I found my wife sleeping alone. She snuggled up with me once I was in the bed with her.

The next day she told me what had happened and how she finally had to tell him I was on board with him fucking her to convince him it was ok. She said that he was amazing. They made out, gave each other oral and then fucked for almost an hour. She didn't know I had seen the finish and she didn't mention that he came inside her. I decided to let it go because there was no need to ruin it for her. I just decided to keep it in mind the next time something like this happened.