Virginia -Tiger Woods‘ex-wife and Cline who has made more than $1.5 billion mining coal in Illinois and West Virginia have been dating for over a year. The pair own homes next door to one another in wealthy North Palm Beach. Cline recently bought a second mansion next to his existing home, while Nordegren just completed renovating her own.

‘He and Elin have their own private enclave,’ a source said. ‘They couldn’t be happier.’ The source added that Cline, a father of four, and mother-of-two Nordegren have a lot in common, including they both want to remain out of the limelight and are interested in philanthropy.

It’s believed Cline, 55, has also traveled to Sweden with Nordegren, 34, to meet her family. Cline owns a lavish, 164-foot yacht called Mine Games, which has its own submarine and is even bigger than Woods’ 155-footer, Privacy. Sources say Elin and Tiger’s new girlfriend Lindsey Vonn have become close friends.

 and ‘they talk all the time’.

Nordegren, 34, originally wanted to get to know Vonn, 29, because she knew the Olympic gold medalist would be around her children a lot, Us Weekly is reporting. Elin and Tiger have two kids together, daughter Sam, 6, and son Charlie, 5. ‘After meeting her, she found she actually liked her,’ a source says of Elin, who who finalized her divorce from Tiger in 2010 after he had cheated on her with over a dozen women.

‘You’d think it would be weird, but Elin loves Lindsey and they talk all the time. ‘Elin likes that Lindsey is a strong woman. ‘Lindsey is really good for Tiger. She’s strong, opinionated, and keeps him in line. ‘Elin found that they are very similar and have a lot in common. They laugh and talk like they have been girlfriends forever.’ Vonn and the golf pro went public with their romance back in March 2013, months after they were first linked.