I'm going to go with the boss.

CARLA is 27 years old, 10 years younger than I am. She's a lawyer of the nymphet type; she has dark (or almost black) hair and curls on her head. Her face isn't so pretty - only nice - but she has an amazing body: gym-style graying skin with short breasts and very big asses that are stiff and pointy as well.
My name is CARLOS, I'm a lawyer; 1.70 meters tall and handsome but not athletic. I was married to Carla for five years before breaking up with her because of the horns she gave me. After many tragedies we ended up dating again (previous relationships) I believed that she really loved me as she always struggled to keep us together despite our betrayals. Maybe it amazed me that I made her leave the modest life she used to lead in order to become the lawyer she is today. The problem was that I had to settle for being horny, since she is not (and never will be) a faithful wife.
We had just moved back in together when the following happened.
After persuading me to accept the horns, Carla started trying to convince me to participate in her experiments. She wanted me to watch her sleeping with other men. This actually didn't seem too difficult for me to take on board. I had already caught (or spied) her cheating on me before. The only difference was that I would not do it against my will but voluntarily. Much harder was knowing that she has been having sex a lot more than I have. At carnival alone, she had slept with 11 different guys (last report), and did not even want to fuck me. Watching her have sex with other guys even seemed easy to accept, maybe it would reduce the frequency of cheating on me so I agreed as long as she wore a condom which is something that she hates.
This opportunity, however, did not come easily. Carla had contact with 4 men, 2 of them had slept with her recently, the other two were constantly singing songs to fuck her. As incredible as it may seem, none of them came across fucking her in my house, even saying that I was okay. So the way was to appeal to Marquinho, the brother of my parents' godson, a Negro 2 meters tall, 26 cm dick who dated Carla during our time apart. We knew he would accept because besides being very confident, he is intimate with us. She's practically family, so she called him in front of me.
- Hi, Marco. It's been a long time. I missed you. Yes... misses ... it was good times (laughter). And how is he? He! my cute one... Ah! Is he missing me? You too are dying to miss him, my sweet pause (laughs). So, you know, I was thinking, what do you think about us killing the nostalgia just a little bit. So who else was I going to think of besides you, the most paused of all?... It's...who knows by watching he learns something. (Lots of laughter!) That! Might as well be! (More laughter.) Also, no? After seeing you in action, what man does not think about giving up? Gives even a displeasure ... A little bit of him. But he will accept it nicely. When are you coming? Could be tomorrow around 2:00 p.m. Okay, we have an appointment then. Kisses, Delicious. Bye-bye.
She hung up the phone, dried her smile and said:
Sorry, but I had to say those things because he loves feeling that way.
He left without giving me any other explanation, as if I were nothing. (Laughter) And I felt slighted by that attitude but thought maybe a little bit of humiliation was part of the game and tried not to call it out.
The next day (Saturday), at the appointed time, Carla was already waiting for him in a shower wearing a very sensual black baby-doll. He arrived 30 minutes late and greeted me with only one nod as she hung herself on his neck to kiss him. It was an extended kiss. His hands ran all over her body right before my eyes. I felt something strange; it was like I had cold. I even trembled trying to disguise myself.
Carla reaches for his dick in her shorts and starts punching him.
Go to the bedroom and get your camera so you can take a picture of that cute little prick.
I obeyed and went. Looked, looked but didn't find anything. Went back to the living room and saw Carla sucking Marcos's huge cock that was already hard enough.
- The camera was here, you horn. Take a picture right away. What an idiot! <unk> she said harshly.
I thought about reacting, but at the time, that's exactly what my role was: soft-horned.
- The battery's dead, I said.
What a stupid man! Take my fucking phone, then!" she said.
Marcos laughed in my face, and I hesitated for about three seconds. Then went back quickly. When I was getting ready to take a picture, Carla interrupted me and pulled her negos by the stick, taking him into his room on the second floor of the house. I followed. She sat him down on the bed and rode willingly without any condoms at all. He bounced around and jumped vigorously.
"Look, little horn. Look how a woman is fucked". That's what I like! What delicious dick!" she would say to humiliate me.
He didn't say anything, he just laughed in my face. She wouldn't stop talking; she called me all kinds of names I was beginning to believe those insults there is no way it could have been staged after a few minutes she announced that she would joke:
- Oh, like that! Like that! I'll make fun of it. Go on, my hot male makes me laugh in front of this useless horn.
She looked at me affectionately and thanked:
- Thank you, my love for letting me feel a real stick inside of me. You're the little horn that I love. Now go to the kitchen and get Marcos a beer. He deserves it.
I didn't know whether to keep that situation or put an end to everything. In doubt, I obeyed. I returned with the beer and saw Carla of 4 on the bed. Marcos dick came out and went in almost all over. You could tell when he touched the bottom of her bottle. She moaned and screamed a lot. I gave him the can. He thanked me and stopped to open it. Carla did not let him stop, started rolling around his cock. The fuck then continued. With one hand he held the beer, with the other he pulled my wife's waistline, who was whining like crazy. She scolded and humiliated me all the time. That excited her even more. He teased her once, twice, three times... and then Marcos laid her down with his legs spread wide open and kept digging deep.
After an hour and a half, Marco finally made ample fun of her belly. She came up to me and rubbed the whole lipped body in my face. I tried to get away from close but she held on. It was too late, I was already dirty with his mockery. She sucked back at Marcos who took quite some time to stand erect. When he stood up, she rode over him, steeped her ass tightly and called for me to eat his butt. That was almost an order that I obeyed immediately. I could feel his stick entering my wife's pussy. Only thin skin separated us two. You could feel it coming in and going out, you could really see how big it was. I'm not exaggerating: It was much wider than mine, maybe twice as wide. Carla started moaning announcing that she would make fun of me.
I'd love to see your wife fucking a guy with an enormous cock, wouldn't you?
He said it would still take a long time to make fun, because he had just made fun of her before. The only way was to eat her asshole. Maybe that's how she could have fun faster. She accepted. She didn't get off the top, but simply took out the roll from the bottle and shoved it in his butt. Apparently, she loves eating her ass, because she enjoyed herself in less than five minutes.
He didn't even take a shower, he got dressed, they said goodbye and waved to me and left. Carla went for her bath without saying anything to me; it was as if I wasn't there at all. But when she came back from the bath, she consoled me with affectionate thank-you notes and comforting kisses. Then she asked me when we could repeat this experience. I told her that I did not like humiliation so I would have to think about it.
But life is always preparing surprises. It was a Tuesday night (three days after that experience), when Carla's boss called. She answered and showed concern. Explained to me that she had brought home a folder from a court case whose hearing would be tomorrow. Her boss happens to have mixed up the folders and put other documents in this same folder. He will travel to São Paulo in the morning, so he has to stop by her house for them.
Around eight o'clock, he arrived. She ran to meet him. I noticed her strange behaviour because she was visibly nervous. In addition, she wore a very sensual top and miniskirt so that the whole body showed off. She invited him in and we were finally introduced. His name is Roberto. He's a tall guy, about 1.85m or 1.90, white, athletic, around 40 years old but with a rather youthful air (he looks like Reynaldo Gianecchini in suit), quite charming. My jealousy woke up right away. Carla never told me she had a handsome boss, and I expected to see some rich fat 66-year-old man.
Carla invited him to dinner, but he politely declined. She then offered him a glass of whiskey (of my finest whisky, of course). He accepted. We sat and talked comfortably for half an hour. She was distinctly different: a mixture of excitement and shyness. The beaks on her breasts almost pierced the top. Now she intentionally showed off her legs, now she covered them with the pillow. It seemed as if she didn't know how to act. He did not show that he understood her strange behavior or perhaps you did understand it, but were too discreet to demonstrate. We drank two or three glasses each, until Roberto charged her for the papers and said she was leaving. She had left it in another room that we used as an office along with four other files of cases. He asked him to go with her into his studio to help identify the documents he wanted. They went and stayed there.
- What's the matter, Carlinha?! Have you gone mad? Your husband is right there. <unk> he said in a muffled and hoarse voice.
- Calm down, Boss. My husband is a horn. He doesn't mind that I have sex with other men. And I always wanted to fuck you. So handsome... elegant ... Come on, relax. There are no problems at all. " whispered Carla in a soft and very sensual voice.
Then there was silence. And then I began to hear groans, and opened the door and saw my wife lying down sucking on her boss's roll; he avoided looking at me. She only noticed my presence after a few minutes.
"Wow! The girls didn't exaggerate, Boss. Your dick is really big. And fat! My God!, I have never seen such a thick stick as this one. Well they warned me!" she said with an expression of extreme happiness.
I'm guessing the girls Carla was referring to are her office secretary, senior lawyer and accountant who provides services for them. She had already told me that these women were having sex with their boss. Not only did she not tell me about how good-looking he looked or what they said about his dowry, but it was really big: seven inches long, scarily thick.
- Go, Corno, don't just stand there and take some pictures of that tasty stick.
I hesitated again, but understood that this was her fetish. I took my mobile phone out of the pocket and started to take pictures. Soon she was riding on that thick roll. Carla wanted to dispense with a condom (she hates it), but Roberto insisted. Because of the condom and the enormous thickness of his roll, penetration was quite difficult, even though she is already accustomed to fucking very talented men. My wife suffered over that cocktail but loved it. She was much more excited than usual. He enjoyed quickly.
They decided to go upstairs. Once again Roberto impressed me: he was carrying her down the stairs without taking out his stick from inside. He's in really good physical condition, despite of age. Stopped at the corridor and sent for her. Gave him strong quick punches. In seconds she mocked again.
They went to bed and started fucking again. Carla's body trembled with excitement: legs, arms, abdomen. Even her mouth was shaking, besides hoarseness. She did not stop praising him. He had even forgotten about my presence there. She mounted again. In a few minutes he made fun of it for the third time. Roberto changed his position: this time penetrated from 4. It was 15 minutes of very vigorous fuck, almost violent. And she made fun for the fourth time, simultaneously with the boss. She took off her condom and wiped the closet with her mouth.
Roberto did not rest. A slight softening occurred, but his member soon hardened. He placed the dick on Carla's ass door and forced it to go through. She opened all of herself up, rolled around, moaned, screamed and cried, but the pussy didn't get in. The condom tore off and he had to change it. The roll was too thick. He started eating her out of a can. Every now and then, he would pull the stick from its shaft and try to enter by the butt, but always unsuccessfully. He put it back at 4 again and tried once more, but that was impossible.
Carla then asked me politely to look for the lubricant in the bathroom on the first floor. I was surprised by such politeness, but went immediately. While looking, I heard my wife's cries of pain coming from her room. I hurried even faster. He must have been killing that poor girl.
When I got back to my room, the door was locked. He (probably he) had left me out of all this fun. I felt like a child and thought about breaking in but that reaction would be ridiculous for someone in my situation. So I went down into the living room and watched TV again. Emptying the whiskey bottle while listening to my wife's screams; maybe he managed to break her ass open. I don't know. All I knew is that I fell asleep after an hour of endless moaning.
When I woke up, around 3:00 a.m., they were gone. I called Carla's cell phone but she didn't answer me. The rest of the morning was spent trying to reach her without success. The next day, idem. She was avoiding me. Carla had disappeared on Thursday and Friday. On Saturday morning, she sent me an e-mail saying that she traveled with the boss. She also asked me to stop calling her cell phone; when she had time, she would explain everything and get her clothes from my house. I don't know when I will see her again.