Is Tiger Wood Breaking Up With His Girl Friend ?? "Watch the Video" of His girl friend, who talks about dating Tiger Woods..

Chalk up another loss for Tiger Woods ... this time, it's his girlfriend -- 'cause Lindsey Vonn just announced the couple has officially broken up.

The world champion skier broke the news on Facebook ... saying, "After nearly three years together, Tiger and I have mutually decided to end our relationship."
"I will always cherish the memories that we've created together. Unfortunately, we both lead incredibly hectic lives that force us to spend a majority of our time apart."
"I will always admire and respect Tiger. He and his beautiful family will always hold a special place in my heart."

Probably for the best ... since she just went on "Late Night with Seth Myers" and admitted she hates golf.....