Kristin Cavallari and Mark Estes Split After 7 Months: Source (Exclusive)

Kristin Cavallari and Mark Estes have gone their separate ways.

A source tells PEOPLE that The Hills alum, 37, is officially single.

Cavallari also confirmed the split during Alex Cooper's Unwell tour stop in Austin, Texas, telling the Call Her Daddy host it was "fresh."

She and the Montana Boyz TikToker, 24, were first romantically linked in February 2024, when Cavallari debuted their relationship on Instagram.

"He makes me happy 🤍" she captioned a selfie of her and Estes at the time. A source previously told PEOPLE that the now-exes met on social media.

The breakup comes less than two months after the pair enjoyed a romantic trip to Greece.

In a set of photos shared to Cavallari's Instagram, she and Estes wore matching all-white outfits as they took in the scenery.

The Uncommon James founder also uploaded snaps of the two enjoying a few cuddled-up moments like sharing a kiss and hugging in another post.

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Shortly after they went public with their romance, a source told PEOPLE in May that Cavallari was the "happiest she's ever been."

“Everything is so good with Mark and he’s great with her kids. They have a lot of fun together. It’s honestly the happiest her friends have seen her in the past 10 years,” the source said in May.

Cavallari shares sons Camden, 12, Jaxon, 10, and daughter Saylor, 8, with her ex-husband Jay Cutler.

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The source added that Cavallari was "enjoying life" and "not putting any pressure" on her relationship with Estes. They later noted that while her children were her priority, she was enjoying her "fun" phase and "learning to enjoy the moment."