Ryan Hurdthought he was having a banner year watching his breakout single,“To a T,“head up the charts — but “that all kinda got washed away” with even bigger news.

Hurd revealed to PEOPLE on the2019 CMAsred carpet Wednesday that Morris called him while he was working with his clothing stylist, so he couldn’t go bonkers in the moment when she shared her results. To a degree, he also kept having to hold in his excitement until the couplemade their public announcementon Oct. 22 via their socials.

“We had a few months where it was just ours, and then our friends and our families and our teams,” says the singer-songwriter, 33, who walked the red carpet solo afterthe couple posed for photographers. “Then it’s been nice to be public and be able to share the news. It seems to be the questions that people want to know about, but it’s fine, because we really are thrilled about it.”

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Ryan Hurd.Jason Kempin/Getty Images

Ryan Hurd

For his public post, Hurd channeledSeinfeld, quoting a classic George Constanza line — “My boys can swim!” — that, he says, “I’ve been saving since I was 13 years old.”

Still, after waiting 20 years to use it, the self-described “Seinfeldnerd” confesses he came close to chickening out, worried that it might be “crass.”

“Maren was the one who was, like, ‘That’s funny — you have to do it,’ ” he says. “I can’t believe George Constanza is part of thebiggest announcement of my entire life, but maybe someday I’ll meetJason Alexander[who played the character], and we’ll get to talk about it.”

Hurd says the couple decided to reveal both the pregnancy and the sex at the same time “just to get it all out there at once.” They chose not to wait until the birth to find out the sex, he adds, because “Maren’s not good at secrets. She wanted to know.”

Morris, 29, originallythought she was having a girl,but neither had a preference, he says, and “We’re very excited just to know what it is.”

But even more important than their schedules, this is a moment when “we’re both really settled personally, and that makes our relationship even stronger,” he tells PEOPLE.

Check out PEOPLE’sfull CMA Awards coverageto get the latest news on country music’s biggest night.

Maren Morris and Ryan Hurd.John Shearer/WireImage

Maren Morris and Ryan Hurd

So what’s he looking forward to about fatherhood? Charmingly, he expresses absolute cluelessness: “I have no idea.”

But he’s eager to learn, and he’s been talking to friends “who are great fathers. They’resharing stuff from their experience, and I’m trying to wrap my head around that.”

Morris, meanwhile, has been downloading pregnancy and parenting apps onto her phone. “She’s able to fully concentrate on becoming a mom for the first time,” he says, “so she’s going to be great.”

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But Hurd says he and Morris would rather their child not follow them into the “crazy world” of professional music. “We’re hoping for a math major,” he jokes.

source: people.com