Lindsey Vonn isn't one to keep her thoughts to herself. After her boyfriend, Tiger Woods, nabbed another PGA Tour Title last Sunday, she made sure people knew what she was thinking about.

Tiger, who is known as one of the best golfers in the world, brought home his eighth Bridgestone Invitational trophy at Sunday's World Golf Championships-Bridgestone Invitational. According to CBS News, this was also his 79th PGA Tour Title, just three short of breaking the all-time record. Needless to say, Vonn was a very proud girlfriend.

"So Proud!!!!" the pro skier tweeted, followed with the hashtag "#79." Vonn also made it known to her 233,000 followers what she thought about the win, adding "#GOAT" to her tweet which stands for "Greatest of All Time."

Vonn, who is also an Olympic Gold medalist herself, has been very supportive of Woods. She is always seen watching his tournaments, and even supports him in training. In an interview with Vogue, she even revealed how nervous she becomes during her boyfriend's matches.

"These are acrylics [on my nails]. I bite my nails, so this is the only way for me to control that. Especially now, when Tiger is playing, I get really nervous. I'm like, if I don't put these on, my whole hand is going to be gone!"

However, according to Fox Sports, Lindsey is afraid the golfer will cheat on her with ex-wife Elin Nordegren while Tiger is out on a vacation with her and their children.

"Lindsey is convinced that Tiger still has feelings for Elin and, if he got the chance, he would dump Lindsey in a flash and get back together with her," the report noted, citing a National Enquirer source.

While there's still no confirmation as to whether the rumors are true, one thing we are sure of: Tiger and Lindsey look really happy together.