Alexis Bledel and her husband, Mad Men‘s Vincent Kartheiser, are really good at keeping secrets!  The couple quietly tied the knot in 2014 and today a co-star of the actress revealed that they successfully hid a pregnancy and childbirth, too!

Scott Patterson, aka Gilmore Girls’ Luke Danes, accidentally shared the news during an interview with Glamour for the highly anticipated Gilmore Girls revival, on Netflix.  The actor discussed his happiness at reconnecting with his former co-star, saying “It was great to see her. She’s really blossomed as a woman and now she’s a proud new mother and married and happy.”

No word on the baby’s name, but Bledel’s rep told People that she and Kartheiser welcomed their son last fall. The two actors met and fell in love when she guest starred as a love interest for Kartheiser’s character Pete Campbell on Mad Men; they became engaged in 2013.