Us Weekly reports that Antonoff has "moved on" and "is seeing someone else," though as Spin points out, a previous version of the story claimed that an "insider" had also told Us that his alleged new love interest is a musician.
Rumours began to swirl about Antonoff and his musical collaborators (just last year he produced records for Lorde, Taylor Swift and St. Vincent), prompting him to clarify his status on Twitter.
Dismissing the rumours as "dumb hetero normative gossip," he defended his personal and professional relationships with female artists, calling them "deeply important and sacred."
He added, "I'm not seeing anyone" with a "lol" thrown in for good measure.
normally i would never address rumors but i resent having the most important friendships and working relationships in my life reduced to dumb hetero normative gossip. those relationships are deeply important and sacred. with that said, im not seeing anyone. lol.— jackantonoff (@jackantonoff) January 17, 2018
Lorde is among the thousands of Twitter users who have since liked the post.
As reported earlier this week, Bleachers contributed a new song to the Love, Simon soundtrack, which is being executive produced by Antonoff. That release, which includes other previously released Bleachers tracks, is due out on March 16 via RCA Records.
The project's last full-length album Gone Now arrived last year.