Kristin Cavallari, 37, shares pic of Mark Estes, 24, bonding with her son just one month after first date

Kristin Cavallari isn’t shying away from bringing her beau, Mark Estes, around her kids.

The “Hills” alum, 37, took to her Instagram Story Sunday to show one of her sons walking side by side with the TikToker, 24, inside a building.

She captioned the sweet moment with a simple white heart.

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Estes appears to be spending more time with Cavallari’s three kids after she admitted they met him ahead of their first date on Feb. 13.

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Talking about her first night out with her beau, she said on her “Let’s Be Honest” podcast last week, “[He] came and picked me up and he met my kids.

“He actually met my mom too because my mom was babysitting my kids, so it just really threw him in the mix.”

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Cavallari — who shares Camden, 11, Jaxon, 9, and Saylor, 8 with ex-husband Jay Cutler — further said Estes is the first boyfriend they’ve ever met.

“When [Estes] came to pick me up, the boys were like, ‘Can I show you my room?’ [Estes] is upstairs with my kids seeing their room,” she continued. “The boys were so excited about him.”

The mom of three added, “My kids really want to see me happy.”

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During the podcast episode, Cavallari also explained she first linked up with Estes online when she found his three-man TikTok account the Montana Boyz, featuring her beau, Kaleb Winterburn and Kade Cutterwilcox.

The “Laguna Beach” star explained it took a few months for her to link up with Estes but when they finally met in person during a group hangout in Nashville, Tenn. in January, they hit it off.

“We all went out. And then, he asked me to be his Valentine,” she added.

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Cavallari and Estes hard launched their relationship on social media during their romantic getaway to Los Cabos, Mexico on Feb. 27.

At first, the TV personality was critiqued for their 13-year age gap, but she has learned to ignore the haters.

“The age thing was a hang-up for me at first,” she said during last week’s podcast episode. “Now, I don’t give a f–k. And I’m all in with this guy. I don’t actually care what anyone else thinks.”