Tabloid reports have linked the pair romantically following Antonoff’s recent split from long-term girlfriend Lena Dunham.
Speaking to fans in an Instagram Live video, Lorde has now said: “Guys: Never. No. Jack and I are not dating. For the last time.”
“I love him, he’s awesome,” she added. “But we’re not dating. Please!”
Watch in the video below at the 20.13 mark:
Antonoff had previously taken to social media to hit back at “dumb hetero normative gossip” amid the speculation.
See his tweet beneath:
Last week saw Lorde win Best International Solo Artist at the VO5 NME Awards 2018.
The exciting prospect was teased in a recent Instagram post that saw the singer offer an update on the next leg of her ongoing ‘Melodrama’ tour – which begins again next month.
“I may or may not have dug up a song that we wrote during the Melodrama sessions that didn’t make it. One that I really love.”