You’re dating Shawn Mendes. When did your relationship go from friendship to romance?
During “I Know What You Did Last Summer,” I really bonded with him as more than a friend. I think he did, too, but we were both really young, and he was experiencing the pressures of his career. I don’t think we knew what to do with those feelings. It was this awkward thing where we both liked each other, but we weren’t together. It was just weird. An energy was there from the beginning, but after that song, we didn’t spend as much time together. Our paths just didn’t cross in that way romantically until we started hanging out again and writing. For me, it just brought it back.
On SNL, you paid homage to Madonna’s Marie Antoinette-inspired VMA performance, and dedicated your 2018 VMA Video of the Year win to her. How does she influence you?
She’s such a badass. I want to be more like her. I think everybody does.