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Thank you for your contribution! Could you tell me more about my mom though? What do you think of her? What would you exactly do to make her happier than she's ever been with her family?

Well, she is in great shape, and has a beatiful face. Could you image how that cute face of her is gonna look with my dripping cock sliding all over it? She seems to be an educated, a classy women that deserves nothing but the best, and I'm that option: young, in top physical condition and at the peak of my sexuality.
You mentioned a 80C bra, the perfect breast size to play with. She'll be mesmerized by the rough touch of my hands, sliding my fingers on those fleshy, wobbly (due her quick breathing) mounds, , feeling her perky nipples get hard under my rubbing fingers.
I like to play a lot with my preys before having my fun, and your mom won't be the exception. Cannot wait to slide my lips on that sexy, flat belly and along those long, toned legs of her. I'll ticke a bit her feet, want to get her whole body on the mood before we start the party. And the party starts with me getting my meal: some pussy eating to prepare it for the best part: the plunging of my fat dick on her as I slide my fingers amidst that shiny, soft, well-cared blonde hair, grabbing fistfuls of it while I pick up the pace, causing nothing but pleasure on her. You won't see us the first times, but you'll get to hear her moaning my name, don't you worry! Be a good boy and let your mommy enjoy your new daddy.
I can DM you, to tell you more about how I'd treat that sexy mom of yours and how both of your lives will change, if you want.
I know you want.   

God damn no mom has a right to be that hot! I don't blame you for wanting to see her fucked. I would push her on her back, rip her panties off, and fuck her with her huge tits flopping everywhere. I would then cum inside of her of course.

Picture this, because it's going to happen once I'm in your lives.
You'd a bad night because all the variety of noises coming out your mom's bedroom: femenine gaspings, moanings, flesh against flesh slapping sounds, the mattress thrashing out the wall, rocking back and forth, and my growls as I plunge my manhood into your mom.
When you are finally dozing off, your cell phone rings. It's a message of your mom, asking you to cook breakfast for two and take it to her bedroom. The clock tells you it is already 10 AM, and you notice that is weird that your mom has not get up to cook for you and give you a good morning kiss, like she used to. But like the great son you are, you obey and prepare the abundant, delicious breakfast your mom deserves.
As you walk towards her room, you can hear me muttering something to her, something that makes her giggle, a muffled laugh.
Finally, you knock in the door. It was a quite long walk. Maybe, because you were afraid of arriving?
The door swings open. I'm standing there, naked, and you cant help but look at my fat, long, veiny and soft (for now) cock. You notice what you're doing, so you stop and take a quick glance at the room instead. That white dress of her, that you think she looks so good with, is all wrinkled down the floor, along with her shoes, bra and panties. There is a mess at the bed, but you can see your mom, smiling at you. She has covered herself with the bed sheet, so you won't get to see her breasts and what is between her legs, but you notice on her long legs and collarbone that she is completely naked under the sheet. She looks quite different, tho. Her usually neat, blonde hair that you used to tell her it look like a princess', it's all tousled and sweaty. You can see kiss traces down her chest and finger marks at the top of her chest, you know where the palms of my hands where. The same handmarks are all over her legs. She is tired, with some eye bags, and moves slowly, it was a rough night for her, after all, but has a blissful smile. Noticing your astonished face, she gives you one of that warm smiles of hers, that always makes you fell better despite how rough your day might have been: "I'm all okay son, don't you worry. This young man is going to stay a little longer with me, just a couple of days. Thank you for the breakfast! You're such a good son."
I smirk at you and your rapt face. Then, I close the door, leaving you outside. Your mom and I have to recover with the food you cooked and the coffee you brought, and then we'll do some things. Adult things, that you don't get to see. But, if you want to peer, I could leave the door or the window a bit open. Just do not hinder us, your mommy is having such a good time.
And, you want her to be happy, don't you?   

I want to cum deeply inside that whore's ass.

Thank you. As YES, I want my mom to be happy and satisfied. I would make very proud to know that my mom does a good job at pleasing you as a woman and I would be jealous but also extremely grateful to you for satisfying my mother's needs. Of course, I would love to watch my mom in action and no, I will never hinder you. I don't want to stand in the way of my mom's happiness. I would just feel appreciative and proud of my mother as I watch you pound her brains out.

Well, I like that you appreciate what I do for your mom. And she surely appreciates it.
You knew things were changing when your mom told you I was moving in. She, as the good mother she is, doesn't want to bother you, to impress you in a way it may affect you badly, so she creates vain and vague excuses for me moving in, excuses that you pretend to believe as you think of the night spectacle I'm going to reward you with. Maybe you should tell her that you were the one who started everything, the one who offered me his mom on a silver plate.  She'd be thankful of the gift you gave her. As I slept on the couch the first days, only to sneak into your mother's room, crawl up her bed... and crawl up her too, and as things changed and I went into her room inmediately afterwards dinner, in front of your very eyes, the excuses went vaguer and harder to believe, but you still acted like you knew nothing.
So, as this contingency passes and the restrictions begin to loose, your mom wants to stretch. To stretch her limbs, of course, since I'm already making sure that her warm, clutching, dripping cunt is getting streched every night. Your mom surprises the three of us taking some days off and making a reservation on a beach hotel
We pack and let you drive, while your mom and I have our way in the backseats. Nothing intense, since she is already thinking on how to tell you I'm the new man of the house, she doesn't want to hurt you... just some tender kisses and the lovely gazes your mom has been recently gifting me with. After she noticed you glaring, she stops and sits straight, her white, cute face all blushed. I'm happy that your mom stopped to be all over me since I know you, I supposed that you were peering, and I didn't want to have an accident due a luker son. We arrive without incidents and take our rooms in the hotel. You notice that your mom and I are sleeping together on a room with only a queen-size bed, while you'll be sleeping on an individual room next to us, but say nothing
After settling in, we decide to get down and have some sun. Your mom wears a new striped bikini she bought specially for the trip. The beach is warm and calmed. There are some families, but is far from crowded. We settle and plunge into the refreshing water, and we have a great time together. No one of those peaceful passers-by would suppose the complicated things going on back at your house.
Finally your mom gets tired and wants to return to the towel so I accompany her, you choose to stay in the refreshing, relaxing water.
Time passes by, and you notice that neither your mom nor I are on sight. You worry up a little, but soon calm down for you know that both your mother and I can watch over ourselves. Maybe we went for a walk? Still, it is a bit irresponsible to just leave our stuff alone on the beach.
An old couple that settled besides us informs you that we went for a walk along the beach. You thank them and ask them to watch over the things, that you'll be back soon, and they agree. Excited and a little aroused, you search for us, following the directions they gave you. Where are we? Maybe we wanted to have a little more fun? To relax a little, since it was a long trip? You are now striding on the beach, and you notice you've entered a quite isolated area, with just a few children playing around, and boring-looking mothers watching over them. No wonder there is almost no one there, as the sand is rougher and there are a lot of rocks that could bother one's bare feet
There is an old, abandoned lifeguard cabin in there, and as you draw closer to it, you hear a familliar giggle rang out. You push the door quietly and carefully, but it is closed. Walking anxiously around, you discover a little room attached to it, to storage first aid kits and thing like that, but that is now empty and the doors swungs open at the push you gave it. There is a little step on its insides, and stepping over it, you get to see what is inside the cabin
The black and white stripes bikini your mom was wearing is laying on the floor, along with my swimsuit. And on an old wooden seat, your mom is bouncing up and down my stiff, swollen cock. My back is leaning on one of the cabin walls, and your mom is hugging me, her head plunged on one of my shoulders to muffle her moanings, as I lick and bite one of her crimson, perky niples. You can see your mom's face, contorted in pleasure, blushed, her lips pressed tightly so her moans won't alert the children playing near the cabin.
And you arrived just in time: you see her as a shiver runs along her spine, her legs trembling, those wide hips of her shaking around as she cames over my cock. A little bit of watery fluids drips on the sand.
"You made me came again, stud" says her once she has recovered. "As much as I'd like to spend all day here, my son might be looking for us"
"Damn, your right" I reply, knowing your voyeuristic side. "But I'm hard yet"
"Lets finish and go back. I can blow you off, I know you like it".
"No baby, I'm quite close. Let me pound finish inside you"
You see as my strong, big hands grap her ass, and my hips began a quick plunging into her. Astonished, you hear as your mom begs me to fill her insides.
The arousement of having her impaled in an almost public place and her naughty petitions overcome me, and kissing her, I burst inside her, my hot, gooey nut adhering to her clinging cunt folds and labia.
We relax a bit before going outside. A little tent has grown on your shorts as you see your mom kissing my face, neck and broad shoulders, worshiping me. Then, you notice I am looking right at you. I wink playfully at you, and give you a subtle thumbs up before your mom slender hands reach my face, pulling me to a deep, tender french kiss. As we press our lips against each others, I wave a signal for you to leave. Having understood that the party is over, you rush back to the towels.
After a while you see both of us walking towards you, your mother smiling and looking quite relaxed, her stripes bikini covering her 80 cups again. She also combed her blonde, long, velvet-like hair. We sit besides you as you cover your loins with a towel, and she gifts you a big, motherly smile.
"Sorry son, we went in for a walk" 
And you can't help but notice there is a white, fat drop sliding down her inner thighs. She notices it too, and rubs it over her legs, still smiling.
"Just some lotion. This beach is lovely, don't you think?"

Your mom is a smoke show.