A/N: Hello again and here is the next chapter, sooner than expected! Please read the warnings before you proceed.

Warnings: Do not read on if you are underage, if you dislike chan and/or incest, or if you like them, but cannot differentiate between what is fan fiction and what is real life. My stories are strictly for entertainment only and not to be copied or followed or taken as the truth in any which way. Got all that? Please proceed ONLY if you agree with the above.

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Molly was stunned at Bill's answer. She just sat there and stared up at him as if he had claimed to have seen Merlin in their living room.

"Are you sure, love?" she asked, her voice trembling.

"Your mother's right, son. You need to be very, very sure about this." Arthur's voice wasn't much steadier than hers.

"I am sure, mum, dad. I want to help."

"Oh, Bill! Thank you, thank you!"

Molly jumped up and threw her arms around her eldest son. She was shaking with relief, guilt and Merlin only knew what else. When Arthur stood up and went around Bill to hug them both, she burst into happy tears.

Finally, finally, she had the chance to be blessed with the baby girl she and Arthur had always longed for.

After a minute of enduring his parents' suffocating embrace and his mother's noisy sobs, Bill fidgeted.

"Enough, mum! Dad, geroff..."

They released him then, Arthur smiling and Molly giving a tearful laugh before clasping Bill's face between her hands and pressing a fervent kiss to his forehead. She then accepted Arthur's handkerchief, using it to mop her face and blow her nose.

"You have no idea what this means, Bill," she told her son. "Thank you so much!"

"I haven't done anything yet," he reminded her in a pragmatic tone before turning to look up at his father. "So uhm, when do you two plan on...?"

"As soon as possible," Arthur replied, but he looked questioningly at Molly.

"Yes, that would be best," she agreed. "Healer Richards pronounced me completely healed this afternoon."

She smiled and gave a little shrug when Arthur's eyebrows shot up. "I was going to surprise you tonight," she admitted.

The look his parents exchanged then warned Bill of what was about to happen next. He adroitly stepped aside as they reached for each other and rolled his eyes at the passionate kiss that commenced. When it dragged on for longer than ten seconds - he counted - he cleared his throat loudly once more to draw their attention.

"So when is the exact day we're going to do this?"

Molly looked at Arthur and saw the same thought mirrored in his eyes. The faster the better; neither wanted to delay this anymore now that Bill knew everything and had agreed.

"Tomorrow would be best since its Saturday," Arthur replied with a decisive nod. "I will get the aging potion in the afternoon. Can we put the boys at your mum's place for the night, Molly? And what about Ronald?"

"Mum won't mind, but Ron can stay with us. He's a good baby and already sleeps through the night."

And so it was settled.

The next day, Arthur returned to the Burrow at four in the afternoon, cradling a small package that he carefully placed in one of the kitchen cabinets. He and Molly then floo'ed Charlie, Percy, Fred and George to the Prewetts' where Molly's parents welcomed their excited grandsons with warm hugs, kisses and promises of ice lemonade and cinnamon buns. When they asked about Bill and his absence, Arthur told them that all his eldest son wanted was a good night's sleep, something he could finally get tonight. It wasn't a lie, but Molly's smile still felt forced. She was very relieved when Arthur suggested they returned home.

It was night now. The dinner dishes had been done, Ronald had been fed and was sleeping in the old crib in a corner of the master bedroom.

Molly felt awkward as hell. She had never felt as turned off as she did right now, lying naked on her back on the Queen sized bed she shared with Arthur. This bed had been the scene of many happy and passionate hours between them. She had always enjoyed having his gentle hands on her body, even when they were in Hogwarts and had snuck off to indulge in some heavy snogging sessions.

She didn't want Arthur to touch her now. Not with someone watching them.

Eyes squeezed shut, Molly took a deep breath and tried to relax. She couldn't. The single globe of light above her was dim, but she still felt horribly exposed, as if she were on display. The fact that she didn't have an hourglass figure - not that she ever had one - only made it worse. Her full breasts were starting to sag after breastfeeding six babies, the skin on her stomach was loose and a bit crinkled from carrying each of them for nine months at a time - two together at one point - and they had all thanked her by giving her additional inches around her hips and thighs.

Even worse, she was dry as a bone and nothing Arthur did - kneading her breasts, sucking on her nipples, kissing her stomach and thighs, caressing her between the legs - worked. She remained dry and his increasingly frantic attentions felt uncomfortable and intrusive.

"Stop, Arthur, please!" she finally burst out, vexed when her voice came out sounding almost tearful. She opened her eyes.

"Sorry!" Arthur stopped at once. He sounded just as frustrated as she felt.

An awkward pause ensued as they stared at each other, Arthur kneeling between her legs in his pyjamas and she propped on her elbows. They had been each other's firsts and sex had always been great between them, from the time they were courting until now. Even after they started a family, stress at work and exhaustion from household chores had never deterred them from making love before falling asleep.

They did that last night after sending Bill off to bed, but only used their hands and mouths to pleasure each other. It was too risky for penetrative sex even with a contraceptive spell since they didn't want Arthur's sperm to compete with Bill's. A condom, a Muggle form of protection, wasn't completely foolproof either - Percy was the evidence of that attempt.

Molly was still breastfeeding Ronald, but after six children, she knew that that was no deterrent to her getting pregnant either! She couldn't help making a face at her wandering thoughts, all too aware of Bill standing silently by the bed and watching them with pursed lips and a wrinkled forehead, something she and Arthur were both trying very hard to ignore.

The random thought that they might be putting their eldest child off the idea of sex permanently crossed Molly's mind - she would have giggled herself silly if she didn't feel so tense and uncomfortable right now. If children all over the world found the idea of their parents having sex gross, then the fact that she and Arthur were botching it up right now must be making it a thousand times worse for poor Bill!

Arthur finally grabbed his wand and pointed it at his fingers, uttering a lubricating spell he very rarely used.

"Close your eyes, Molly," he urged her and when she obeyed, started stroking her between the legs again. "Just relax. Yes, that's it..."

Molly took another deep breath and again, tried to relax. This was something she had always enjoyed with Arthur, she told herself firmly. It was nothing to be ashamed off and there - that was a pleasant and very familiar tingle right there. Her thighs parted without conscious thought.

"That's it, love."

In less than two minutes, Molly's breathing was shallow and quick, her skin rosy with arousal and her body slick with her own secretions. When Arthur's fingers fell away, she opened her eyes to see him smiling down at her, his blue eyes holding their usual, mischievous twinkle. She almost smiled back at him, but the sight of Bill's curious face peering over his shoulder made her bite her lip instead.

"Are you ready?" Arthur asked, something he very rarely had to do either.

Molly took another deep breath and reminded herself of why they were doing this. She nodded, making sure to include Bill in her smile.

"I am now..."

Smile widening in relief, Arthur turned to the nightstand and picked up a small vial of light blue liquid. Then he turned to Bill, his expression turning solemn.

"Bill, this is the aging potion we talked about last night. The dosage here will increase your age by four years and the effect will last for two hours. This means your body will undergo temporary puberty to become that of a thirteen year old, but you will still be the same person mentally. The apothecary assured me it is safe to use as long as you are over eight years old and take one dose at a time."

He took a deep breath and let it out slowly before continuing. "I am going to ask you one last time - are you ready to do this?"

Bill nodded without hesitation.

"I am, dad."

"Alright then." Arthur unstoppered the vial and held it out, his hand shaking noticeably.

In contrast, Bill's hand was steady as he reached out to take it. He gave his tense parents a tiny, reassuring smile, lifted the vial to his lips and drank its contents down.

To be continued...

Thank you for reading. While I am happy to know there are readers following this story and favouriting it, I would really appreciate a few words of encouragement as well. I'm wading deep in unchartered waters here, people, and would like to know I'm not alone. Please leave a review if you're enjoying this story, OK?