For the first time since 1940, there are more single adults over 35 than there are married adults in the same age group. Many are in the dating pool for the first time since adolescence. What are the rules of dating the second time around? How does one grow accustomed to the new rules when we should be bouncing grandkids on our knees? Kathy welcomes Heather Dugan into The Sitting Room to find out how to Date Like a Grown Up.