South Korean actress Seo Yoo Jung has opened up about a deeply unsettling experience from her past, revealing what she described as the creepiest gift she ever received from an ex-boyfriend. The revelation came during a recent YouTube video uploaded to her channel, where the actress was casually celebrating her birthday with her production team.

Seo, widely recognized for her supporting role in the 2018 hit drama Mr. Sunshine, appeared relaxed as she shared birthday-related memories. However, the mood shifted when she began recounting a gift that left her staff visibly shocked. According to coverage by Koreaboo, the actress explained that the present initially did not alarm her, but years later took on a far more disturbing meaning.

Introducing her story, Seo recalled a moment from a past relationship before delivering the startling detail.

"A long time ago, someone I was dating gave me a necklace—but it was made from one of his own teeth. I think it was a molar."
— Seo Yoo Jung

She went on to describe how the necklace was made, offering more insight into why her feelings about the gift have changed over time. Speaking candidly, Seo reflected on her reaction back then versus now.

"At the time, I think I actually liked it... But looking back now, it feels like he just didn't want to buy a necklace. He drilled a hole through the tooth and made it into a necklace with a silver chain. It definitely didn't look like his first time doing something like that."
— Seo Yoo Jung

As reported by Xportsnews, the actress also revealed that the story did not end with the breakup. She explained that she and the man parted ways shortly before Christmas, which led to an unexpected request.

"I dated him for a while, but we broke up a few days before Christmas. When Christmas came, I got a text around 8 PM saying, 'Give me back the necklace made from my tooth.' I thought that he was using that as an excuse to see me again. But at the time, I didn't think that far—I just thought, 'You want the necklace you gave me for Christmas back? That's gross,' so I sent it back by mail."
— Seo Yoo Jung

Following the story, members of the production team asked whether the ex-boyfriend was a fellow celebrity. Seo responded playfully with a brief "Shh!" and declined to elaborate, fueling curiosity among viewers.

Seo Yoo Jung married a businessman in 2017 and shares a daughter with him. After separating in 2020, she confirmed in 2023 that the couple had finalized their divorce.