The family of a man who died in a three-in-the-bed sex romp have won $3million in damages against a doctor who failed to warn him about  extreme physical activity.

William Martinez, 31, suffered a fatal heart attack caused by the excitement and physical activity with a woman and another man.

The married father-of-two died a day before he was due to have a heart stress test.

A court in Georgia, heard that the women involved in the sex romp were not his wife.

Lawyers representing the estate Martinez filed a medical malpractice suit against Dr Sreenivasalu Gangasani.

They claimed he had failed to warn Martinez about taking part in any physical activity after he visited him to complain about chest pains a week before the threesome