The pair, who married in Italy in 2009, have quietly ended their marriage, reported Female First.
"Thank you all for your kind words. @DanielleBux and I had many wonderful years together. We remain very close and the greatest of friends," tweeted Lineker.
Bux mentioned his tweet in her post and also wrote, "We have shared the most incredible 8 years that I will always cherish. We will remain the best of friends."
Their split was apparently partly caused by 36-year-old model's desire to have more children.