Martina Navratilova is an American tennis player who Karen used to date.
Will & Grace
Relationship with Karen
In 1985, Karen was in a relationship with Martina, who claims to have been straight before they met. Karen says that Martina was one of the people "dying" to marry her but she was in love with Stanley Walker. She breaks up with Martina at a disco, along with two guys.
In real life, Martina did not identify herself as bisexual or lesbian until 1981.