Eric Christian Olsen and Sarah Wright Olsen Expecting Second Child

03/01/2016 at 11:30 PM ET

There’s a baby bear on the way for Eric Christian Olsen and Sarah Wright Olsen.

The couple are expecting a sibling for 2½-year-old son Wyatt Oliver, whom they affectionally call “little bear,” they announced via Instagram Friday.

“Deep talks with #littlebear And our new #littlelove due this summer. #surprise #baby #when3becomes4,” the actress, 32, captioned a photo of Wyatt getting a grip on her growing belly.

Added the NCIS: Los Angeles star, 38, “This picture is either one of two things: Wyatt fully embracing and loving his impending new baby sibling. Or he is trying to push them both down a steep embankment, in a last ditch effort to preserve sole ownership of his train set. #littlebitofperfect”

Eric Christian Olsen Sarah Wright Olsen Pregnant Expecting Second Child
Vincent Sandoval/WireImage

Deep talks with #littlebear And our new #littlelove due this summer. #surprise #baby #when3becomes4 @ericcolsen

A photo posted by Sarah Wright Olsen (@swrightolsen) on

The pair, who married in Wyoming in 2012, say the secret to their success is talking things out.

“Sarah’s wonderful,” Olsen told PEOPLE of his wife last year. “She’s the best communicator, so emotionally intelligent.”

— Sarah Michaud

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Awww! Wonderful news! Congrats to the entire family!!

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