Nathalie stood frozen in the doorframe, staring at her younger brother and her mother, both naked in the bathroom. Her heart was beating so fast that she thought she was going to have a heart attack. It was obvious that they just had sex, with her brother behind their mother like that and the strong smell of sex in the room.
Of course this was wrong, and she knew that. She had no idea how or why it happened, all she knew for now was that her brother had just fucked her mother and she couldn't know if it had happened before. So the only thing she could do was to quickly turn around and leave, heading to her room upstairs and changing into her bathing suit. When she was troubled, she always went swimming in their pool to calm herself and she was truly in need of it now.
Back in the bathroom, Lexi was still in shock but she hadn't moved yet. Looking back over her shoulder at her son, she frowned and saw that he was just as shocked as her. "God I hope she doesn't tell your father. Honey, can you get out of me so I can get dressed? I need to go talk to her and try to fix this mess." Simon had expected her to be upset and maybe regret what just had happened, but she didn't seem to feel this way. Slowly, he moved his hips back and his large cock slowly slid out of his mother's tight ass, causing her to moan softly before her hole was finally empty. She turned around and gave her son a quick hug then moved to put on her robe.
Simon couldn't help looking at his mother differently now. This had changed everything between them and from now on he would see her in a sexual way, his eyes unable to look away from her shapely, naked body until she had put the robe on.
"Mom, maybe I should talk to her. I think I can explain and make her understand. What do you think?" He had always been close to his sister as well, their entire lives. Many times they had slept in the same bed and they had done practically everything together until she had moved to another school. In a sense, she had always been his only friend. Lexi nodded slightly, actually relieved she would maybe be able to dodge that awkward conversation with her eldest daughter. How do you even explain that?
So she turned to look at Simon as he put a towel around his waist and she nodded. "Alright sweetie. Just...tell her the truth I guess, and that it was the first time. If it doesn't work, then I'll talk to her." Simon smiled a bit, trying to think how he would explain it to Nat, and he left to go find her. Seeing her in the pool through the window, he went to his room to put his swimming trunks but when he came outside, she had moved to the jacuzzi.
A whole lot was going on in Nat's head now. For years now she had noticed how big her brother's cock was and she knew it was wrong to even think about it. But so many times when they shared a bed sometimes if he had nightmares or if he was lonely and needed company after a hard day, she had either seen it through his boxers when they were getting ready for bed, or she had felt it. Several times, he would hug her from behind when in bed and she would feel the enormous length against her ass. But he never tried to rub against her or hump her, so she knew it was innocent. But considering she wore small panties to bed, she had felt everything.
But of course, she had been a teenager too and a shy, nerdy one at that. It's only when she left for college that she changed her clothes and traded her glasses for contacts, that she stopped looking nerdy and began making more friends. Of course, it helped a great deal that her breasts had grown so much bigger within a single year, now matching her mother's. Coupled with her narrow waist and bubbly butt, she was quite the sight now but it wasn't always like that. As they both went through puberty, she was sometimes curious and horny just like him but had always managed to hold it back. There was one time that she had seen his cock by accident when he was changing in his room and the door was open, and she had never forgotten it.
Nat had stayed a virgin until last year. Then one night after a party, she was hanging out with three of her male classmates and they had been drinking quite a bit, and she was so horny that night that she couldn't control it. It began with her kissing the one boy she had always found cute and next thing she knew, she was on her knees with her head in his lap, his cock down her throat. Then she felt hands on her hips and felt her short skirt being pulled up, exposing her bare ass to whoever was behind her. But she didn't care, she continued giving her very first blowjob. She had seen so many porn movies that she didn't need an explanation on how to give a good one.
Then it got out of hand. She felt her ass being groped thoroughly and fingers pawing at her covered pussy until those same hands pulled her panties down and even in her slightly drunken state, she was conscious of the fact that her sex and ass were exposed and she didn't even know to whom. But she was so wet that it didn't matter for now so she continued sucking for all she was worth. And then it happened. With barely any warning or time to react, she felt a hard cock enter her drenched pussy and slide deep, so deep inside of her. Someone had just taken her virginity, and she loved every second of it as she began being fucked, all the while with another cock in her mouth.