March 26, 2014 11:00 AM

Kevin Mazur/WireImage

There’s a Bachelorette baby on the way!

J.P. Rosenbaum and Ashley Hebert are expecting their first child this fall, PEOPLE confirms.

“They are both so thrilled,” a source close to the couple tells PEOPLE. “J.P. is especially excited; they have wanted this for a while.”

While attending Bachelor Sean Lowe and Catherine Giudici‘s wedding on Jan. 26, the pair hinted to PEOPLE that a family was in their near future.

“We definitely want to have kids when the timing is right  — I’m hoping sooner rather than later,” Hebert said.

Their priority is a healthy baby but, if given the chance to choose, Rosenbaum would love for their first child to be a boy. “I grew up me and my brother; it’s all I know,” he explained.

“I thought I wanted a girl for me, but seeing how much he wants a boy, I think he’d be really cute with a boy,” Hebert added. “The boy would be so cute, he’d look just like [J.P.]!”

Rosenbaum, 37, and Hebert, 29, met on the seventh season of The Bachelorette and were engaged in May 2011.

The couple were married in December 2012 in a televised ceremony officiated by show host Chris Harrison and attended by Ryan and Trista Sutter, the first couple from the reality series to tie the knot.

When Hebert and Rosenbaum spoke to PEOPLE last March, children were on the horizon — once she finishes her Philadelphia dental residency.

“Once Ashley’s done with her residency and we figure out where she’s going to work, then we’ll start thinking about family,” Rosenbaum, a construction manager in New York City, said at the time. “But it’s not far off.”

With Hebert’s schooling expected to be completed by June and their first child arriving this autumn, the timing works out well. As for any additional Rosenbaums, there’s likely to be one more in the future.

“I want one kid and J.P. wants two kids,” Hebert told PEOPLE. “We’ll probably have two.”

— Sarah Michaud and Wade Rouse with reporting by Aili Nahas

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