A Logic Master Party

I go to a party with my wife. When we get there, four other couples arrive at the same time. We all know each other, so we all greet each other. A greeting can be a handshake, a kiss, a hug, or whatever. When everyone is done I ask everyone how many times they shook another person's hand. All answers I get are different. Given that nobody greets their own spouse, how many hands did my wife shake?