May 10, 2018 might be the biggest day in Sheldon Cooper's life.

First, Sheldon (Jim Parsons) got married to Amy (Mayim Bialik) in The Big Bang Theory's Season 11 finale. Then, during Young Sheldon, grown-up Sheldon the narrator revealed that he has kids. Children. Plural.

The reveal came at the end of the Season 1 finale. Sheldon (Iain Armitage) had been inserting himself in the courtship of his Meemaw (Annie Potts) and his friend John Sturgis (Wallace Shawn) to a wildly inappropriate degree. Meemaw finally laid down some boundaries, which inspired Sheldon to draw up a relationship contract of the kind we've seen on The Big Bang Theory.

"I would go on to draw up such contracts throughout my life," grown-up Sheldon narrated. "With roommates, with my wife, even with my own children."

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The revelation doesn't come out of nowhere — Sheldon and Amy have talked about having children as recently as the wedding episode, where Sheldon said they'd have to decide whether to raise their children as fans of the Renaissance or Enlightenment historical periods — but this was a surprising way to disclose the information.

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Young Sheldon co-creator Steven Molaro told TV Guide about how the children decision was made. There was the opportunity for cross-show synergy by having the revelation come the same night as the wedding that he didn't want to go to waste, of course. But Molaro and co-creator Chuck Lorre have also been thinking about where Sheldon is in his life as he's narrating Young Sheldon. Molaro was talking with Lance Barber — who plays Sheldon's father George Sr. — about how George Sr. seems a lot nicer than we would have thought based on what Sheldon has said about him on The Big Bang Theory, and that got them thinking about how Sheldon having kids of his own would change his perspective on his father.

"I think that some of these stories adult Sheldon is telling us through young Sheldon are reflections on 'now that I have my own children, maybe I'm seeing that world through my Dad's eyes more clearly than I had,'" Molaro says. "Those thoughts had been on my mind for awhile, and I think that's what led to that final line of the season."

It's an idea Molaro has taken from his own life. "I've got two boys," Molaro says, "and I remember being 11 years old and your parents are like these gods to you, and then when my son was 11, my feeling about myself was 'oh no, I don't know what I'm doing! I have no idea what's going on. Is that what my father felt like when I was 11?' It really starts to change your perspective on a lot of things. And I think some of that is what we're seeing on Young Sheldon." (We saw it a little bit during the Big Bang finale, too, when Sheldon said he missed his deceased father and wished he could be there. His attitude is already softening.)

The next question, of course, is how this will play out on The Big Bang Theory. Molaro says he doesn't know and hasn't talked about it with Big Bang's day-to-day producers (Molaro used to be The Big Bang Theory's showrunner before he moved over to Young Sheldon and now has more of an advisory role on Big Bang).

"There are no plans for Sheldon and Amy to start having babies anytime soon," he says "So just because adult Sheldon has referred to it, there's no timeline that we're locked into."

So maybe someday, down the road, Sheldon and Amy will have a baby, but the show might end before we get there. No one knows yet.

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However, we will be seeing some more Young Sheldon/Big Bang Theory crossovers as the shows continue.

"We've created this unique time portal that I don't think I've seen too much on other shows where we can bounce back and forth 30 years," Molaro says. "There are certainly other people [from Young Sheldon] that we can still meet on Big Bang." One of those people might be Sheldon's friend Tam. Adult Tam wasn't at the wedding, and Molaro is interested in finding out why.

"I think they probably had some kind of falling out over something small and annoying that Sheldon didn't like," Molaro says.

More will be revealed — like whether we'll see a lot more Wallace Shawn — when Young Sheldon and The Big Bang Theory return in the fall on CBS.

(Full disclosure: TV Guide is owned by CBS.)