If I explained just how Asami got pregnant, without first changing the rating to Mature,
the story would get most likely taken down by the Admins.
All I'll say is that she most definitely did not have sex with Mako, and we'll leave it at that.
This is shorter chapter than most, as it's more of an interlude than an instalment.

Baby Talk

"Who's a widdle bundle of wuv? Who's a widdle bundle of wuv?" Korra asked with a look of perfect joy and contentment on her face, her eyes as wide as saucers, "You are! Yes you are! Yes you are!"

"If only the public could see you now; they'd think you'd finally lost your mind." Asami rolled her eyes, trying to concentration on the contract from Future Industries that had been sent over to the estate for her to sign, "You do realise that they're not due for another four months?"

"That's no excuse not to spend quality time with them and let them know just how precious they are." Korra looked up at her wife from her spot on the floor; Asami was laid out, full lengthen, on her favourite couch, her swollen belly clear as day. One of her hands was absent-mindedly rubbing it, until Korra playfully captured it with her own.

"Stop that." Asami warned, "You did this to me."

"You are more beautiful than ever!" Korra insisted with a sincerer smile, "And how was I to know that twins ran in your side of the family as well?"

"How do you know it's my family and not Mako's?" Asami shot her an accusing glare, "You know how many cousins he has."

"Well... we wanted more than one child, right?" Korra asked with a playful smile, "And who knows; maybe Katara was wrong, and rather than twins, it's just one, really big baby?"

"Not helping." Asami told her point-blank, "And leaving aside the fact that Katara is one of if not the best and most respected healer and midwife in the entire Southern Water Tribe, trust me when I say it's twins. No single child, not even Mako's, could cause me so much pain and discomfort. Next one is yours to carry."

"Assuming the world calms down enough to do without its Avatar for nine months, I'd be more than happy too." Korra shrugged, "Until then, you get all the fun."

"Fun?" Asami dropped the contract and fixed her wife with a stare that could have stopped a charging elephant-rhino dead in its tracks and reduced it to a heap of apologetic ash, "You think this is fun? I have to get up six times a night to use the bathroom, they insist on having what I can only assume are wrestling matches when I'm trying to sleep and none of my cloths fit me because I'm the size of an elephant-koi!"

"On the plus side, you're positively glowing," Korra assured her with a sincere smile, "and your boobs are absolutely spectacular!"

"Oh no! No no no!" Asami wagged a finger, "I don't care what the pregnancy hormones are doing to me; you don't get to worm your way out of this by playing the sex card."

"Damn!" Korra's shoulders slumped, "I was kind of looking forward to that."

"Yes, well, unfortunately," Asami gestured to the contracts, "some of us have work to do."

There was a tentative knock on the door, and it slowly opened.

"Mako!" Korra pulled herself to her feet, still not quite as agile and limber as she had been, but getting there, "When did you get back?"

"Late last nigh." The detective stood in the doorway, still unsure just how he fitted into the new dynamic, "Thought it best not to disturb you two so late..."

"Oh for the love on..." Asami rolled her eyes, "Mako; come in, sit down and relax before you strain something."

The young man did as instructed while Asami pulled herself up into more of a seated position, Korra taking a spot at the other end of the couch so she could massage her wife's feet.

"Whatever else may have changed, we're still your friends, and we wouldn't want that to change." Asami did her best to assure him, "I can understand how this must be difficult for you; I've heard some of the things that have been said about your... past relationships with Korra and I, and I can only guess how much of a blow to a man's ego it must be when two of his ex-girlfriends fall in love and marry each other. And I am sorry if there's anything we said or did that made things any worse."

"We're both sorry." Korra added with a nod.

"And so if there is anything we can do to try and make things more comfortable for you, then all you have to do is ask." Asami promised him, then quickly added, "Within reason, that is."

"Well, there is one thing..." Mako looked hesitant, "I can understand why you might not want to make the... practical side of things public, but could you recognise me as the father?"

There was a moment of silence, Korra and Asami exchanging meaningful looks, their hands reaching out for each other.

"Mako, when you agreed to help us start a family, we told you that you could have as much or as little to do with the upbringing and lives of the children as you wanted." Korra spoke softly, "We made that offer because we understood that the day will most likely come when you'll meet the right woman and get married. And we didn't want to burden any relationships you might have with the public knowledge that you already have children with an unconventional couple."

"We never intended to cut you out of their lives fully, and so long as you're okay with it, we'll explain the truth to them once they're old enough to understand it." Asami continued, her free hand resting on her swollen abdomen, "But, and this is something we have discussed at length, if you want to take a more active role, publicly or privately, we're more than happy for you to do so."

"Thank you, both of you." Mako still looked sad, "It's just... my grandmother isn't very well; we're not sure how long she has left..."

Asami stood, cursing under her breath, walked over to Mako, pulled him to his feet and hugged him. Korra walked over and embraced Mako from the other side, pinning him between them.

"You're our family; first through choice, and now through blood." Asami assured him, "And we look out for each other."

"And we love you." Korra squeezed him tight, "Maybe not the same way as we once did, but we still love you and can never thank you enough for what you've given us."

"Thank you. I..." Mako tried to speak, but couldn't find the words, "Thank you."

"What's going on in here?" Bolin appeared in the doorway, a confused expression on his face.

"We're starting a new family tradition." Asami gestured for him to join them, "So get over here, you big lug; I want to make sure my kids get to know their favourite uncle."

"Okay." Bolin shrugged, still not sure just what he'd walked in on. He made his way over to the trio and embraced them all with a deep sigh, "This is nice." his eyes snapped opened, "Wait: 'uncle'?!"

To Be Continued...
(Don't hold your breath; Destiny is out tomorrow)