Sorry to be the barer of bad news for all her male admirers, but Kate Upton has a boyfriend.

The grandfather of Detroit Tigers MVP baseball player, Justin Verlander, told Celebuzz that his grandson is dating the 20-year-old famed Sports Illustrated swimsuit model - and he is a proud papa, to say the least.

"I heard he has been on dates with a Sports Illustrated girl. I saw a photo - she's beautiful," Richard Verlander Sr., Justin's grandfather, told Celebuzz. "They make a good looking pair because he's a good looking man too."

According to Celebuzz, multiple family members confirmed the pair is in a relationship. But Justin's grandfather said that even if they weren't dating, Justin would be snatched up soon.

"I do know he's on the dating scene. Justin is a fine boy and whoever he ends up with is lucky. He's not only a great baseball player, he's a great guy," he said.

Justin and Upton have been spotted flirting in public, which spurred rumors since July that the model and baseball player are dating.

The model's grandfather, Stephen Upton, said she cheered her 29-year-old pitcher boyfriend on from the stands at an Oct. 6 baseball game.

"She has all of our support," he said.

Kate is on the November cover of Cosmopolitan magazine, in which she appears topless in a spread. In her interview, she made it clear she knows what she's looking for in a man.

"I find a sense of humor sexy in a man. Someone who is just relaxed and can have a good time," she said. "All pickup lines are horrible - none of them work. You just walk up ... make a fool of yourself."

There have been numerous sightings and Twitter reactions of the dating duo getting cozy in Detroit. The Michigan native has stayed mum on her relationship status, even playing coy about divulging who she was dating when she appeared on "The Ellen DeGeneres Show" back in February.

DeGeneres quizzed Upton about her relationship status and rumors about her dating Eva Longoria's beau, Jets quarterback, Mark Sanchez.

When DeGeneres asked what Sanchez thought about the magazine cover, she replied, "He's cute. Even if I had a boyfriend, I wouldn't ask how he felt about it."

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Kate Upton