By Katie Atkinson
February 20, 2014 at 12:00 PM EST
Vince Bucci/Newsmakers

During an hour-plus interview with Grantland’s Bill Simmons, Lena Dunham covered a range of topics — from Jezebel’s “messed up” offer to pay thousands of dollars for her un-retouched Vogue photos to the creepy undertones of the movie Beautiful Girls.

But our favorite topic was the Girls creator’s Tumblr obsession: Old Loves. The name invokes images of elderly lovebirds, but it’s actually an exhaustive catalog of celebrity couples who are no longer together. Some exes are very memorable (we all know that Notebook co-stars Ryan Gosling and Rachel McAdams were also a real-life couple), but some are positively shocking (see photo above: Heath Ledger and Heather Graham dated?!?).

One day, when Dunham was browsing Old Loves, she even came across a familiar face: her current boyfriend, Fun. guitarist Jack Antonoff, and his high school girlfriend…SCARLETT JOHANSSON. Thankfully, Dunham was the picture of confidence, barely flinching as she discussed sharing a romantic interest with Black Widow. Check out the whole interview below (it’s definitely worth it just to hear these well-matched pop culture addicts trading trivia):

Oh, and a few bonus Old Loves finds: Drew Barrymore + David Arquette, late INXS singer Michael Hutchence + Kylie Minogue, Sofia Coppola + Keanu Reeves, Jessica Biel + Chris Evans, and Justin Timberlake + this chick.