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Amy Schumer says a joking text from Jennifer Lawrence helped her emotional state following the 2015 shooting during a screening of Trainwreck in Lafayette, Louisiana that left two women dead.

“You know, that is actually when I felt the closest to Jennifer Lawrence, because that day she texted me, ‘It’s your fault,'” Schumer told Lena Dunham during an interview for the latest edition of Dunham’s Lenny Letter. “And in times like that only jokes make you feel a little better.”

Added Dunham, “Jennifer Lawrence texting ‘It’s your fault’ is like the greatest worst thing I ever heard.”

In the summer of 2015, Jillian Johnson, 33, and Mayci Breaux, 21, were killed by a gunman when he opened fire inside a movie theater showing Schumer’s film Trainwreck. Schumer told Dunham that the thought of the murders “still f—ing kills me.”

“I mean, on paper it’s like yes, of course, yes, you connect to that, two women were murdered, you know,” Schumer said. “But knowing it was my movie, and … that they went and they bought tickets and wanted to go see this movie, it just crushed me. I felt so powerless. And it felt a little bit like something that I had done, that there was a connection to me actually hurting people.”

Schumer explained that she “didn’t know how to react” after hearing the news, but soon teamed up with her cousin, New York senator Chuck Schumer, to advocate for gun safety.

“I got to go to the White House with my brother and my sister when Obama signed his executive order on gun control, and all these people were there, all these victims of shootings,” Amy Schumer told Dunham. “All these people who joined this movement to try and help stop gun violence, and they come over and they are like, ‘Thank you, because nobody listens to politicians, they listen to celebrities, so thank you, please keep helping us.’ Hearing that, and seeing Obama deliver that speech — like, tears just shot right out of his face when he started crying about the first graders being shot — I was just like, I am a lifer, I am in this. I really hope I don’t have to die for it, but I would.”

Asked by Dunham if her stance on gun safety has lead to an increase in security at Schumer’s stand-up shows, the comedian said yes. “Security is up. I’m really trying to protect myself. I am not being an idiot,” she said.

For the full interview with Schumer, head to Lenny Letter.