She said: "I'm wearing this ring that Jack gave me, and I'll always wear it because love is a really cool, powerful, eternal thing".
Antonoff, who fronts the pop band Bleachers and plays lead guitar for fun, in addition to his production work, has collaborated with Dunham's pal Taylor Swift and numerous other musicians over the years.
The "Girls" creator then thanked her fans for their "support" during her break-up, which was first reported on Monday (08.01.18).
Many users questioned Dunham's presence, before a commenter referenced Aurora Perrineau's accusation of rape against Girls writer Murray Miller.
Thompson responded with the following statement, specifying that no, Lena Dunham had nothing to do with the #TimesUp initiative and yes, the actual women involved were just surprised as the critics that Dunham turned up for the photo opp.
Dunham responded to the critique with this statement to IndieWire: "I was honored to be invited to the meeting by a close friend and to observe the work that these awesome women have been doing the past few months".
There's absolutely room for ongoing conversations about Dunham within the feminist space, but in this case, Thompson is returning the attention to Time's Up - which, FYI, has raised over USA $16 million.
'For highly personal reasons, I've been unable to join previous efforts but being asked to be a part of this celebratory moment was truly handsome. "I've worked with Tessa and respect her artistry and admire her consistent candor".
The pair started dating in December 2012 and reportedly broke up in December 2017, according to E!
In November, she tweeted that she thought she overheard Jack planning a secret proposal to her, but later found out he was just joking around with his sister about something unrelated.
'Things women do lie about: what they ate for lunch. We regret this decision with every fiber of our being, ' the statement read.