Tallulah Willis’ former fiancé is filmmaker Dillon Buss, the man she was engaged to before their relationship ended in 2022. Their breakup became an important chapter in Willis’ personal story, particularly because it happened during an exceptionally difficult period in her life.
Willis, the daughter of actors Bruce Willis and Demi Moore, has been candid about several painful experiences, including the end of her engagement and the struggles she faced around the same period. Years later, she moved forward with musician Justin Acee, whom she married in August 2026.
Here is what is publicly known about Willis’ relationship with Buss and the events surrounding their split.
Who Is Dillon Buss?
Dillon Buss is a filmmaker and creative professional who became known to a wider audience through his relationship with Tallulah Willis.
Before their engagement, Buss and Willis had been dating for roughly a year. Their relationship developed away from some of the intense attention that often surrounds members of the Willis-Moore family.
Buss was involved in filmmaking and creative projects, while Willis has pursued work as an artist and fashion figure.
Their shared creative interests were one aspect of their relationship.
The Engagement
Willis and Buss became engaged in May 2021.
The engagement was publicly celebrated at the time, with Willis sharing photographs from the proposal and showing the couple’s excitement about their future together.
For Willis, the engagement represented a significant personal milestone. She was in her late 20s and appeared to be beginning a new chapter with Buss.
However, the relationship would ultimately come to an unexpected end.
The 2022 Split
The engagement was called off in June 2022, according to accounts Willis later shared publicly.
The breakup occurred only a few months after Bruce Willis’ family announced his diagnosis with aphasia in March 2022. The timing added another difficult emotional dimension to an already challenging period.
Willis later described the breakup as deeply painful.
The end of a serious relationship can be difficult under any circumstances, but for Willis it coincided with other personal struggles that she was privately trying to manage.
A Difficult Period
Willis has been unusually open about her mental health and relationship with her body.
During this period, she experienced serious difficulties involving body dysmorphia, an eating disorder and other mental health conditions. Her struggles eventually became severe enough that her family intervened.
She later entered an inpatient treatment program in Texas as part of her recovery.
The experience became an important turning point in her life. Rather than treating the breakup as an isolated event, Willis’ later reflections have placed it within a much broader period of emotional and physical distress.
Her Father’s Diagnosis
The timing of the breakup also matters because Willis was coping with her father’s health news.
Bruce Willis’ family publicly announced in March 2022 that he had been diagnosed with aphasia and was stepping away from acting.
The diagnosis eventually led to a more detailed explanation of his condition, with the family announcing in 2023 that he had been diagnosed with frontotemporal dementia.
For Tallulah, watching her father’s health change while simultaneously dealing with the collapse of her engagement created an extraordinarily difficult period.
She has spoken publicly about how her family supported her through those experiences.
Recovery
Willis’ recovery eventually became a major part of her personal story.
Her family encouraged her to seek professional treatment after recognizing how serious her eating disorder and related struggles had become.
Entering treatment gave her an opportunity to address issues that had been building for some time.
Over the following years, Willis increasingly spoke about mental health, recovery and self-acceptance. Her openness helped bring attention to issues that can remain hidden even when someone appears successful from the outside.
Life After Buss
The end of her engagement did not mark the end of Willis’ romantic life.
She later began dating musician Justin Acee in January 2023.
The relationship developed into a long-term partnership, and the couple announced their engagement in December 2024.
After several years of moving through personal challenges, Willis and Acee reached another major milestone in 2026.
A New Marriage
Tallulah Willis and Justin Acee married on August 8, 2026, in Sun Valley, Idaho.
The intimate wedding represented a very different chapter from the difficult period surrounding the end of her engagement to Buss.
Willis reportedly wore a custom Balenciaga gown for the ceremony, adding a fashion element to an otherwise private celebration.
The wedding also demonstrated how much her personal circumstances had changed in the years since her relationship with Buss ended.
What Happened to Buss?
There has been limited public information about Dillon Buss’ life following the breakup.
Neither Willis’ former engagement nor the subsequent details of his personal life have remained a major focus of mainstream coverage.
For Willis, however, the relationship has continued to appear in discussions of her personal journey because the breakup coincided with one of the most challenging periods of her life.
Her later reflections have focused more on what she learned and how she recovered than on revisiting the details of the relationship itself.
Beyond the Breakup
Tallulah Willis’ story is ultimately about more than an ex-boyfriend or broken engagement.
The end of her relationship with Buss occurred alongside serious health and family challenges. She subsequently sought treatment, continued her creative work and became more open about mental health.
Her relationship with Acee eventually brought her to marriage, providing a new chapter after years of personal upheaval.
That progression has made the Buss relationship an important part of her biography, but not the defining feature of her life.
Tallulah Willis’ former boyfriend and fiancé was filmmaker Dillon Buss. The pair began dating around 2020 and became engaged in May 2021 before ending their engagement in June 2022.
Their breakup came during a particularly difficult period for Willis, following the public announcement of her father Bruce Willis’ aphasia diagnosis and amid serious personal struggles of her own.
Willis subsequently entered treatment and began a long process of recovery. She later found a lasting relationship with musician Justin Acee, and the couple married in Sun Valley, Idaho, on August 8, 2026.
