The couple separated a few weeks ago, according to People, which first reported the breakup news.
Klum, 40, and Kristen, 41, began dating a few months after the model filed for divorce from singer
The supermodel and bodyguard are said to have ended their professional relationship as well, with a source telling the mag that "they are no longer working together."
"Life is about timing. He was incredibly supportive, and they were there for each other, but they're moving on now," the source added. "They still have a great friendship."
Though they didn't get engaged or married, the former couple exchanged matching Tiffany & Co. diamond-and-gold bands.
"I did get a present from my boyfriend. He did give me a ring and he has the same," the German supermodel told omg! Insider last May. "I am not engaged. I am not planning to get married anytime soon. It's just a beautiful piece of jewelry. Just something nice."
Kirsten also famously helped the Klum save her son Henry and two nannies from a riptide in Hawaii that threatened their lives last April.
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