He licked around her right areola, tracing circles on her beautiful chest. Her nipple hardened and lengthened in anticipation. Just as it kept reaching out, he covered it with his mouth and lapped the tip with his tongue. She arched her back -- this was too much. Her pretty boobs were getting so much attention, and her vagina was throbbing in anticipation, rubbing gently against his crotch. She was about to cum.
And then he softly bit her nipple, with his lips -- and gently squeezed the other one with his forefingers. It pushed her over the edge -- her panties gathered a damp spot, and she convulsed with a scream -- sending her tits jiggling like mad. Something else happened, though... and he figured it out after wiping his face clean.
Her tits were lactating. When he squeezed earlier, they spurted milk all over him. As her boobs bounced around, they sent more droplets around the room, until they finally settled, still leaking streams down the sides of her breasts.
After exploding, she was too hazy to notice, but when she eventually looked down at her cleavage she realized something was unusual. She felt like she just experienced a major release, but now her tits felt fuller than ever. "Babe... I don't want you to stop. They're so full," she cried, rubbing her boobs.
"You're lactating." This was startling information, but she didn't really have much mind to pay it at the moment. "Get it out of me, then. Suck me dry." With that, she raised her arms over her head, and left her tits freely exposed to her lover. He admired them for a moment -- at this point, they may have been double Ds, heavy, brimming with sweetness. Her sensitive nipples wanted his attention. Right now, he was staring at two literal jugs, big, full,... and she trusted him to take care of them for her. It felt almost overwhelming. But there was no choice to be made, here -- he wanted to do this for her.
First, he relieved some pressure down below; he removed her dripping panties, discarding them. He wanted to make her feel totally relaxed -- he briefly played with her clit, priming it in anticipation. Then he reached for a vibrator and handed it to her: "Take care of yourself so I can focus up top." She turned it to a low setting and reached below, losing herself in the sensations. With her arms reaching down as they were, they perked up her boobs even more; they were ripe and aching to be tended to.
He leaned over her side and started sucking. He alternated breasts, he kneaded them, he squeezed them, he kissed them, and he played with each nipple, encouraging more milk to come out. Before long, multiple streams were running down the sides of both breasts, oft onto her arms. His hands were drenched in it. He lapped up as much as he could, and he drank, and drank, and drank... it felt like heaven for both of them. For her, it was relieving the tension on her chest, and she could feel the swell decreasing. Her boobs were really sensitive -- more so than they had ever been. She felt milk steadily flowing out of them, as he was doing his best to keep it coming.
... After a while, though, he started feeling full, and pulled back for a break. Then he realized, she was getting empty. The discussion they were having earlier -- her prayer was being answered! There was milk utterly
everywhere
, but her breasts were visibly down to a C cup. He was about to point this out, when she interjected his thoughts and said, "Keep going... hnnn..." She was still working herself downstairs, the vibrator now on medium.
He reached forward and grabbed both breasts, pushing them together, hoping to suck both at the same time. This almost worked, and it may have been successful ten minutes ago, but they shrank so much that her nipples couldn't bridge the gap. He fell back on his routine, trying to service both as best as he could. He tried poking her nipples -- what usually might have elicited a giggle, elicited an intense moan. As her titties were getting smaller, they were still growing in sensitivity, the nerves having less flesh to cover. She felt like she was about to pass out in pleasure.
Finally, she decided it was time for a change of pace. She suddenly sat up, once again on her knees, and eased him down onto his back. She was hardly aware of her B-cups, but she was now more absorbed in how horny she was. She bent over to remove his underwear, but he stopped her to ask, "You're still on the pill, right?" She chirped, "Mhm!" and continued her business.
Now with nothing between them, she slowly set herself on his rock-hard cock. She liked the way it felt, and she cooed. It filled her up nicely, rubbing all the right places. Sliding up and down, both of them were getting ready to explode. As she got more comfortable, she slid faster and faster, her titties bouncing up and down, throwing milk all over the place. As she got closer to orgasm, she grabbed her boobs, still sexy as ever, and squeezed them herself, milking them and pinching her nipples, which had receded in size and length at this point. As he got a front row seat to watch his girlfriend milk herself, furiously riding his dick, he couldn't hold himself any longer -- he needed to release.
He throbbed inside her, sending jets of cum inside. The sensation was the last straw for her, too, and she shuddered as her vagina squirted intense blasts over his dick. She leaned back, letting everything go -- and the last of the milk followed suit, emptying from her boobs, spraying all over her lover (and the bed). She collapsed onto her pillow and they both fell asleep.
...
He woke up when she turned on the lamp by the bedside. He leaned up to see her inspecting her own chest, admiring their size. They weren't gone -- there were still boobs there, just, inconspicuous. And they felt amazing, too; she couldn't help but shudder when she touched them... how sensitive they were. More importantly, they were light enough that she could move around with ease. Her back felt great.
"... Hey," he called out. She looked up. "Do you like your boobs?" She grinned.
"I don't know... I think I might miss having big tits from time to time, but... yeah, I like them.~" Then she stopped for a moment. "They're A cups -- sure that's big enough for you?" She asked with a mixture of playfulness and concern.
"Hmm... If you're happy, then I think they're 'just right'."