Tiger Woods appears to have had quite a few extramarital relationships. This would normally cause a lot of pain for a marriage partner.
But according to the ZenCast you can listen to here, sexual misconduct can mean many things, and one of them is that all his secret sexual partners were also guilty of creating hurt and pain.
If you have sex with a married person, you need to understand you may be sowing some seriously bad karma. Have a listen to this interesting and illuminating podcast here about one of the five basic Buddhist precepts; not committing sexual misconduct. (The key discussion starts at 9 minutes and 50 seconds into the podcast.)