So much so, it seems, that the gal opted to tag along as the golfer participated in a practice round at Muirfield Golf Club on Monday in preparation for the British Open, which begins Thursday in Guillane, Scotland.
Later, the Olympic skier could be seen watching her man do his thing while sitting alongside his bag and staying hydrated.
Of course, this isn't the first time Vonn has stepped out in support of her significant other.
In May, Vonn could be seen hanging out within reach of Woods as he took part in the poker tournament that bears his name in Las Vegas.
And a month before that, she was on-hand to watch him compete in the 2013 Masters Tournament at the Augusta National Golf Club in Georgia.
But Vonn admitted to E! News in June that she is still getting used to all the press and attention that comes with being part of a celebrity couple.
"It's weird," Vonn told us while attending the 2013 CFDA Fashion Awards in New York City. "I'm used to it in the ski world, but not in my personal life. So, it's been difficult and interesting."
She added, "I mean, it's weird when people are taking pictures of you when you don't know it. It's a little bit—a lot—intrusive."
But Vonn said that she and Woods are "dealing with it" and insisted "we're happy and that's all that matters."
The two announced they were an item four months ago by posting a bunch of pics on Facebook together as proof.
"Our relationship evolved from friendship into something more over these past few months and it has made me very happy," Vonn wrote on Facebook at the time.
Soon after, they made their red carpet debut as a couple at the Costume Institute Gala at the Metropolitan Museum of Art in New York City in May.