Wife and Jack

My wife Mary is taking martial arts classes. She told me it is to stay fit. I once went with her to the class. The trainer, Jack, is a handsome man in his thirties, nice muscular body and brown skin. After seeing how she looked at him, I think there are some other reasons making her attend the class than just staying fit. Sometimes, a part of the class also is about self defence. The trainer will play the role of an attacker and teach the students how to react.
One day, Mary prepared for her class. She usually dresses in her kimono and drives to the gym in her outfit. As she was getting dressed, I noticed that she had chosen a nice sexy thong and didn't put on her sports bra below her top. It seemed she had something on her mind. "Don't wait for me honney, I'll be coming home late tonight. We are training for the exams and it will take longer than the regular class." she said before giving me a little peck. I closed the door behind her and thought it might me interesting to follow her later and check out what she was up to.
I waited almost until the usual end of the class. The gym is not so far away from our place, so I took my bike to quickly ride there. When I came there, I eneterd the gym and went to the stand. From here you can nicely oversee the room from above and as there was no official match, I was hidden in the dark. Class was about to finish. The students lined up for the final salute and left the hall. My wife stayed back and approached the trainer. "Can I talk to you ?", she asked. "Sure. What's up ?" "I'm a bit scared about the upcoming exams. I'm not sure to be ready and I don't want to fail." "Don't worry, you'll be just fine." Now she was very close to him. "I wonder if you could help me getting my moves right." "Sure. I can plan for a revision during the next class if you want." "I was more thinking about a little extra training right now if you don't mind." "No problem. We'll go slowly through everything." "Thank you!"
She stood oposite of him. He grabbed her by the shoulders pulling on her top. It slightly moved and the cutout opened just enough to reveal that she wasn't wearing a bra. I saw that the Jack was looking at her cleavage for a brief moment and he made her practise to throw him on the floor. "Ok, now let's work on your punching." he said. Mary took position and Jack came behind her. "Ok. Now, go!" She let out a scream and moved her right fist forward. "All right, that was a nice punch. But you should move your other fist backward at the same time." He was standing very closely behind her, took both her fists in one of his hands and made the movement with her. "See, just like that. Back and forth and forth and back." His body was all against her back and it looked like she enjoyed the feeling. "Now you do it!" He said and retreated. Of course, he had to correct her a couple of times again, always taking her arms, his body against her back.
When he was satisfied with her punch, he suggested some more exercises. "Do jumping jacks! Let's go!". He did the jumping jacks in front of her. As she jumped, her big tits bounced up and down, opening the top more and more. They almost popped out. "Ok. Great. How about some more practise of self defense ? I will attack you from behind and you will try to defend yourself." He went behind her and grabbed her shoulder. She turned around, taking his hand and threw him on the floor. "Good. Let's do that again!" Jack said. He got up and positioned himself behind Mary again. He grabbed her shoulder again, but when she tried to remove his hand he had a firm grip on the tissue. As she turned, her top went out of place and her right boob popped out. Jack let go the tissue and was expertly thrown on the floor. "I am sorry, I didn't mean to expose your breast." he mumbled. But he couldn't look away from her boob. "It's not a problem." Mary said taking more time then necessary to readjust her kimono. I think I could see a bulge in Jack's pants and I think Mary noticed it, too. "Can I try to attack you now ?" she asked. "Ok." She got behind him. Jack is a tall guy and Mary is rather small. She tried to reach his shoulder. Jack grabed her and put her on the floor. "You are too tall. Can I try something else ?" she asked. "Of course." This time, instead of trying to get hold of his shoulder, she put her arm around his hip and grapped what she could find right in the middle of Jack's pants. "That's a hard muscle!" she said leaning on Jack's back and pushing her body against his. He was taken by surprise and just let it happen. Her hand tighly held his hard dick and stroked it gently through his pants. His eyes were closed and he enjoyed the treatment he was getting. Mary got in fornt of him, dropped slowly to her knees and started to pull down his pants. His Big hard cock popped into her face. "So that is what you are hiding in there! It looks so hot!" she said and started to kiss it gently. She kissed her way down to his balls. Her hand was still on his shaft and now she stroked him as she sucked on his balls. He responded with a light moan.
"Mary, please suck me." "Not just yet!" she said. Her tongue licked his balls. She briefly stopped to spit on his dick and continued to stroke him faster. She pulled up his hard shaft and started licking from his balls to his ass, her hand moving up and down on his hard rod. "Do you like that ?" she asked him. "Oh, Mary, please don't stop. It feels so good." She looked at him from below and licked him. He grabbed her hair and tried to guid her up. "I really want you to suck me now. Please!" She followed his guidance. His hard cock pointed at her open mouth and she again kissed his member. Jack pushed her head against his hips. Mary opened her mouth and his cock slid inside her mouth. Eagerly, she sucked on it. The noise she made made me so horny and I got my own cock out and started stroking myself.
Mary's head went up and down as she sucked Jack. Jack strocked her hair and pushed her head so that he would enter her deeper. Mary now took all the length of his cock in her throat, gagging on it. She really seemed to enjoy herself and his nice thick dick and let it slide in and out of her mouth keeping it deep down her throat from time to time. Mary was breathing heavily and Jack moaned hard. Then, she let go of him, stood up and kissed him on the mouth. "I have always wanted to do this, Jack. You are so muscular and sexy. And your dick is long and thick. I can't get enough of it." Kissing, they were dropping to the floor. Jack laid on his back, Mary on top of him, her face again on his member. He removed her pants. "What a nice thong!" His head was between her open legs now. Then he pulled the string of her thong aside and started to kiss and lick her pussy lips. "Hmmm, that feels so good!" Mary moaned. His hands ran all over her ass and his tongue worked on her clit while she continued to suck his cock. They continued like this for several minutes. Then Mary couldn't concentrate enough to take care of him as the pleasure overwhelmed her. She pushed her back down, her pussy into his face as he fucked her with his tongue. "Oh my god! Oh my god!" she screamed. "Make me cum! Make me cuuuuuuum!" Her entire body was shaking as the orgasm ran through her.
She collapsed on the floor next to Jack, breatching hard. Jack opened her legs and moved on top of her, his hard cock pointing to Mary's pleasure hole. "I love your hairy pussy! It look so sexy, all open and ready for my hard cock. Hope you are ready for it to enter you." "I want to feel you deep inside me, Jack. Fuck me, fuck my little pussy. I want it so badly. Please give me your cock." With that Mary guided Jack's dick to her pussy. He slid in effortlessly, first just the head. They savoured the feeling of him penetrating her. Then Jack wanted to fill her and thrust his cock deep inside her wet pussy. Mary grabbed his ass and pushed him against her hips to make him come even deeper inside her if that was possible. She held him so that he didn't go back yet, enjoying the feeling of his cock in her. "Can you feel my cervix ? You are so deep inside me. you almost made me cum again. My hubby is never reaching so deep inside me. you are so big and long. I love it. Now I want you to move inside me." He obliged and started to move in and out of her vagina. First slowly, then faster and faster. Soon you could hear his balls slamming against her wet pussy. Both were moaning so hard now. I was enjoying the view and stroking my hard cock quickly. "Fuck me, Jaaaaaack! Fuck! Me! Ahhhhhhh!" She had cum once again, and was collapsing all her body shaking.
Jack was not done with Mary yet. He gently caressed her body, taking special care of her tits and nipples. "You have been a naughty wife and I will have to punish you!" His hands were all over her big tits and he pinched and tore on her nipples. "Hey! They are sensitive! Don't do that, it hurts!" "Shut up, you slut!" he said and turned her around. Her back was now facing him. His dick was totally wet from her juices and Mary was still exhausted from the orgasms. He pushed his hard member against her ass and his cock head easily slipped inside. "No! I don't like that!" Mary complained. He simply ignored her and started rubbing her clit as he pushed his dick deeper and deeper inside her ass. "You know you want it! Now be a good slut and let me fuck your ass." "Fuck, it feels so good when you rub my clit. Don't forget my nipples! Ahhhhhhh! Yes, Jack, just like that..." His long dick was now fully in her ass, moving in and out and his fingers were all over her clit and rubbing and pinching her nipples. "I will fuck your ass hard!" Jack cried. He went quickly in and out of her ass, and after a short while made her cum again. Then, he pulled out, turned her around and came all over her face. Both screamed in joy as he did that. Upstairs, I also came.
They lay for some time exhausted next to each other, gently caressing each other's body. "You are a naughty wife! I want to fuck you again." Jack said. "It's impossible, I'm married." "You should have thought about that before. Do you want me to call your husband ?" "Ehm, no! Not really. You wouldn't do that, would you ?" "Well,... if you let me have my way with you, I might not call him. I'll let you know when will be the next time I will fuck you." "I don't really have a choice, do I ?" Mary said smiling. You could see that she liked the idea.
Now I thought, I'd better get home before Mary did and I quickly left the gym. At home, I slipped into the bed. A couple of minutes later Mary came home. I pretended to be asleep and she quietly went to bed as well.