Friendships between woman:
A woman didn't come home one night.The next day she told her husband that she had slept over at a friend's house.The man called his wife's 10 best friends.None of them knew anything about it.
Friendships between men:
A man didn't come home one night.The next day he told his wife he had slept over at a friend's house.The woman called her husband's 10 best friends,8 of which confirmed that he had slept over,and 2 said he was still there.