updated 08/25/2015 AT 8:16 PM ET
•originally published 01/20/2013 AT 11:15 AM ET
Allison Williams wouldn’t masturbate in a public restroom. But that’s not the only difference between her and Marnie Michaels, the character she plays on HBO’s hit comedy Girls.
“There were moments reading the script that I thought, ‘WOW, okay!’ ” the actress, 24, tells Company magazine’s February issue and digital edition. “It’s the most private thing anyone can do, but being an actress can make you feel vulnerable.”
She adds: “My grandparents watch the show. I don’t know why I was so concerned, though. They have been alive for virtually 90 years, so who am I to presume that sex never existed before me?”