Disclaimer: The characters and locations don't belong to me, I'm not trying to become rich whit this, blablabla. I think is clear.
The eight-years-later talk
When Barney got up, Robin was already in the kitchen, having some breakfast. Or, something, because she was only playing with the food.
"Hey, it's Sunday, wanna go somewhere?," he asked.
"Mm-hm..."
"That's a yes or a no?"
"Mm-hm."
"Robin..."
"I've been thinking," she said suddenly.
"About what?" Every time Robin said 'I've been thinking' meant she been thinking about a bad thing. Or a thing that were going to lead them into an argument. He really didn't want to hear what she'd been thinking that days.
"Our conversation, at Ted's and Tracy's," she specified. "You know, about—"
"That was an unfinished conversation!"
He really, really didn't want to go back to the 'children' topic. Not anymore. It was true that they never talked about that before, but, since Robin didn't want kids, all the alternatives are off the table. And there, when the topic finally came to light, he was in his forties, and she was... Almost in her forties.
"But I can't stop thinking about that," she said. "I know it's stupid, but... I simply cannot stop."
"Okey, I'm listening..."
"It's just... Everything is changing except us. Well, and Stuart and Claudia. They're always one step far from the divorce, but that isn't important..." She close her eyes a second. "I'm sorry. I'm just, a little distracted. Okey, everything is changing, all our friends has kids, different priorities that spent all the possible time in the MacLaren's."
"We're different. I knew that since the moment I asked you to marry me, Robin," he said. "Why this matters so much to you? We're happy. Or I think so..."
"Yeah, isn't just that. It's the kids topic."
"Just to be clear: do you want kids? Will you want kids any time in the future?"
"No, and I don't think so."
"So?! Why the hell are we having this talk?!"
"I don't know! Maybe there was a time when you want kids! Maybe in ten years you will be thinking that you should have had children! And I never be able of offer you that."
"I said you 'forgot it' because I didn't wanna have this talk —of all the talks existent in this world—" he said, much more calmly than Robin. "There was a time, yes, of I think about having kids. When I thought you were pregnant. Except for that little moment —and when Ted almost adopt a kid, you know...— being a father wasn't in my plan. It was never there, it still isn't here. Okey? That wasn't my plan. Since the moment I found Tracy in a drugstore the only plan was get you. So, why are we talking about this eight fucking years later?"
"Because we suck at having talks?"
"I mean seriously."
"Because I was freaked out with Penny and Luke, and then I discovered that isn't so awful. Taking care of children."
"Because we only took care of them for two days and a half."
"Yeah, maybe..."
"Look, Robin, don't freak out about this, especially if it's for me wanting kids. I only want you. The rest doesn't matter, not even a little bit."
Having kids was never in the plan of this two, but I think, for every couple, this talks comes sooner or later. Because they realise all people around have kids, because they realise that they are too old to having kids... That kind of things.