Was Tiger Woods' cheating behind split from ex Lindsey Vonn?

Tiger Woods and Lindsey Vonn called it quits after the golfer was unfaithful to her, new reports have claimed.

The 39-year-old ace golf star and Olympic skier, had ended of their nearly 3-year-long relationship earlier this month saying that the decision was mutual, blaming their busy schedules as the cause, Stuff.co.nz reported.

However, a close source told a UK publication that it was because Woods "had a relapse in the sex department," and had a one night stand with an un-named woman after being eliminated from the Farmer's Insurance Classic in San Diego in February.

The source said that Vonn found out about it, and it was just like when he kept cheating on his ex-wife, Elin Nordegren, with whom he has two kids, during their 5 year marriage.

However, the insider added that that it wasn't something special, as he was just finding some relief as an unmarried man, and when he realized he had been seen with the woman, he decided to come clean to the 30-year-old skier.

Woods really wanted Lindsey to be the one, but he since he has an addiction, he blew it again, the source said.