Sam told you he wanted to go through the transformation alone, so the two of you spent Sunday apart. On Monday, however, the two of you planned to meet up again at the beach near your house and go on a date. You arrive to find the place empty, as it usually was. There was no lifeguard at this beach, and a much larger beach nearby was a public park. The two of you had chosen this place on purpose as it would be empty, just in case you decided to have sex.
"Ty guess what! I didn't have to give up my athleticism after all!" you hear Samantha shout from behind you. "I have Amazonism!"
"Ama-what? Whoah!" you exclaim, wheeling around to see your fiancé's new body. Samantha was definitely a woman now, there was no bulge in her bikini bottom, but both her muscles and breasts were massive, and she stood at nearly 220cm(7'3") tall!
"Amazonism. It's an extremely rare condition that has only been recorded about 30,000 times in all of human history. Nobody knows why, but some women develop increased strength instead of decreased strength when they transition from male to female. Amazons have been known to pull of massive feats of strength...like this!" Samantha grunts as she crouches down and lifts a massive boulder out of the sand, holding it over her head. After a moment, she turns and tosses it off to the side. It doesn't fly far, but the fact that she was able to even lift it at all is impressive.
"So little man...", she says while lifting you up quite easily in her arms, "what are we going to do today"
"This!" you cry, reaching out and giving her massive, massive breasts a squeeze. They're both easily the size of beach balls and you can feel equally massive nipples underneath your hand. He breasts are almost impossibly large even with her huge frame. "A-ah", she cries as you feel her grip on you suddenly loosen.
You drop to the ground as your massive girlfriend staggers slightly, before composing herself. "D-don't touch my nipples! They're extremely sensitive with this condition and it makes me feel weird when you rub them. I don't know how to describe it really. Tired? Groggy? Maybe docile is the right word. Regardless, I hate it. It makes me feel weak and helpless in spite of this body."
You agree not to do it again as long as Samantha agrees not to lift you up into the air again. The day continues with you discussing your future plans, especially in light of Samantha's ability to help out with your dad's business. The two of you enjoy a nice picnic lunch, and you put up with quite a bit of domineering behavior from your soon to be wife. With her massive size, she towers over your tiny 160cm(5'2") frame, and she keeps making you feel small. She can't help but keep showing off her massive height and muscular body, and at one point even brags about how she's "basically the man of the relationship" due to how much bigger she is. Eventually, you've had enough.
"Hey enough of that!", you yell after receiving yet another headpat from your giant fiancé. You reach out and squeeze her one of her breasts again, making her recoil. "That's it little man! Time to put you in your place!" Samantha scrambles into a fighting stance, but as she pulls away from you you managed to rip off her bikini top, exposing her massive breasts and her equally massive nipples. They're rock hard, and so is your dick. Despite how angry you both are, you're both also horny as hell. Just as in your jousting match your lack of height is an advantage, allowing you to duck under her first attempt to grab you and slip under her breasts. You tilt your head up and grab her right breast with both hands. Planting your face on top of the nipple hanging in front of you you start to suckle it.
Samantha's reaction is immediate. She quickly stands up to her full height to make you fall off her, but you lift up your legs and wrap them around her torso. As you continue to suckle, she falls backwards onto her sizeable ass, and you glance up to see panic in her eyes. You wrap your arms around her body as she moves to push you off. At first you can feel your grip on her weakening, but after a few more seconds her strength, or at least her will to resist peters out and her grunts of frustration turn into moans of pleasure. Without taking your lips off her breast, you unwrap your legs and reposition your penis to penetrate her vagina. Soon, her moans are joined by yours. You finally detach from her nipple and get a look at her face. Panic has been replaced by pleasure. She gently pushes you back down onto her other nipple as you continue to thrust into her. After what seems like an eternity, you both come.