too bad it took John in Kansas to remind us that the morality issue is separate from statistics.

If statistics were the issue, the question should read "Which Sex is more likely to have sex outside their primary relationship?"

"cheating" implies a moral decision already.

(and the notion, that gender is the major factor in anyone's decision to have multiple relationships, is narrow to begin with....culture, economic level, stress level, and several genetic factors are ALL involved)