Martin Kirsten | Entertainment News, Photos, and Videos

Heidi Klum and her bodyguard boyfriend Martin Kirsten have split after dating for a year and a half, JustJared.com can confirm.

The 40-year-old model and Martin, 41, split a few weeks ago. The pair started dating a few months after she filed for divorce from her ex-husband Seal.

“Martin was there for her during a challenging time in her life and it was something she will always be grateful for,” a friend of Heidi‘s told People.

“They are no longer working together,” another source said. “Life is about timing. He was incredibly supportive and they were there for each other, but they’re moving on now. They still have a great friendship.”

Heidi and Martin were spotted together earlier this month shopping at a local supermarket.

ARE YOU SURPRISED that Heidi Klum and Martin Kirsten have ended their relationship?

Heidi Klum dons a cute top while grabbing Starbucks coffee before heading to JAG Gym on Sunday (January 19) in Brentwood, Calif.

The 40-year-old Project Runway host was joined by her kids – Leni, 9, Henry, 8, and Johan, 7.

PHOTOS: Check out the latest pics of Heidi Klum

The day before, Heidi was trendy chic while shopping for sporting goods after a soccer game.

Earlier in the week, Heidi was red hot while attending the 50th Anniversary of the Sports Illustrated Swimsuit Issue Party in Hollywood.

FYI: Heidi is wearing the Elizabeth and James Boxy Pullover sweater.

25+ pictures inside of Heidi Klum spending time with her kids on two different days…More Here! »

Heidi Klum carries a bouquet of flowers while doing shopping at Whole Foods supermarket on Saturday (January 4) in Brentwood, Calif.

The 41-year-old Project Runway host was joined by boyfriend and bodyguard Martin Kirsten, who pushed a cart full of groceries.

PHOTOS: Check out the latest pics of Heidi Klum

Earlier in the week, Heidi donned a red lip while arriving on a flight at LAX Airport.

“I don’t think so. Four is great,” Heidi recently shared to E! about having more kids in the future.

FYI: Heidi is wearing rag & bone Miramar jeans.

10+ pictures inside of Heidi Klum and Martin Kirsten dropping by the grocery store together…More Here! »

Heidi Klum dons a cute pair of patterned pants while grabbing a cup of coffee at Starbucks on Saturday (December 28) in Brentwood, Calif.

The 40-year-old Project Runway host was joined on the outing by her boyfriend and bodyguard Martin Kirsten.

PHOTOS: Check out the latest pics of Heidi Klum

“Took my boys on a hike in my new #HKNB work out gear,” Heidi tweeted the day before with a pic of herself and three of her pet pooches. Check out the pic below!

Last weekend, Heidi showed her love for tigers while doing some Christmas shopping with her nine-year-old daughter Leni in Santa Monica.

FYI: Heidi is wearing head-to-toe Heidi Klum for New Balance.

10+ pictures inside of Heidi Klum and Martin Kirsten step out for coffee after Christmas…More Here! »

Heidi Klum keeps it cool and casual while doing some Christmas shopping with her daughter Leni, 9, on Sunday (December 22) in Santa Monica, Calif.

That same day, the 40-year-old Project Runway host was spotted cruising around in a large black Ford truck with her boyfriend and bodyguard Martin Kirsten.

PHOTOS: Check out the latest pics of Heidi Klum

“This year for the first time [the kids] each have their own tree in their room,” Heidi told People while hosting a Creativity Holiday Party at Children’s Hospital Los Angeles. “That’s a lot of trees, I know. They were taking photos of us when we left the lot, and they were like, ‘Oh my gosh, they’ve got the whole forest!’ But it’s because I have so many kids!”

10+ pictures inside of Heidi Klum out and about…More Here! »

Heidi Klum dons a bold jacket while visiting Santa Claus with her kids – Leni, 9, Henry, 8, Johan, 7, and Lou, 4 – at The Grove on Saturday (December 21) in Los Angeles.

The 40-year-old Project Runway host was joined by her boyfriend and bodyguard Martin Kirsten.

PHOTOS: Check out the latest pics of Heidi Klum

Earlier in the week, Heidi was all smiles while visiting the Children’s Hospital for a Truly Scrumptious for Babies “R” Us and Paper and Pencil by FiftyThree event.

FYI: Heidi is wearing the Elizabeth and James Erwan Leather Jacket.

10+ pictures inside of Heidi Klum and Martin Kirsten taking the kids to see Santa Claus…More Here! »

Heidi Klum is chic in stripes while doing some shopping at Doggie Styles on Sunday (December 15) in Beverly Hills, Calif.

The 40-year-old Project Runway host, who was spotted carrying her adorable pet pooch Buttercup, was joined by boyfriend and bodyguard Martin Kirsten.

PHOTOS: Check out the latest pics of Heidi Klum

“Sometimes I jump on the trampoline with my kids or take a hike with my dogs in the canyon by my house,” Heidi recently shared to Competitor Magazine about incorporating fun in working out with her kids. “Sometimes I run for 30 minutes on my treadmill, but I prefer to be outdoors.”

FYI: Heidi is wearing a Laveer blazer and Darylynn Eyewear sunglasses.

30+ pictures inside of Heidi Klum and Martin Kirsten shopping with Buttercup…More Here! »