It's a Small Dating Pool After All

I've been binge watching Gossip Girl on Netflix for the last two days and had a random thought pop into my head. They say you've slept with everyone that your partner has slept with. Well Chace Crawford (Nate Archibald on the show) used to date Carrie Underwood who dated Tony Romo who married Candice Crawford. Yes, you read those matching last names correctly. Candice Crawford is Chace Crawford's sister. So they basically have slept together via Tony Romo. How incestuous. 

Thing they every trade dirty details? Photo from eonline.com