In an interview with Glamour magazine she states that she shares a close friendship with Taylor Swift, and that the two often talk on the phone.
|“||She helps me be stronger and make better decisions||”|
|“||She has amazing creative instincts. She's really a proponent of not feeling pressure from anybody else and recognising that you have a better connection to what your 'brand' is than anybody else.||”|
Taylor has worked with Lena's boyfriend, musician Jack Antonoff, on "Out of the Woods" and other songs from 1989. They both love cats. For her 25th birthday, Lena gave a necklace to Taylor, which Taylor called her "new most cherished possession".