Arnold Schwarzenegger and his girlfriend, physical therapist Heather Milligan, appeared together at the Austrian World Summit in Vienna on June 16, 2026 [2].

The outing is significant because Milligan rarely accompanies the 78-year-old [1] former governor to high-profile public events. Their presence at the climate conference signaled a joint effort to support global environmental action.

During the summit, the couple posed for photographs with former Vice President Kamala Harris. The event brought together various international leaders and figures to discuss climate strategies in the Austrian capital.

Schwarzenegger and Milligan have maintained a long-term relationship that has largely remained out of the public eye. Reports on the exact duration of their partnership vary, with some sources citing 13 years [3], and others stating 14 years [4].

Conflicting reports also exist regarding the start of their relationship. Some records indicate the pair met in 2012 [5], while other reports state they began dating in 2013 [6].

Despite the private nature of their relationship, the appearance in Vienna marked a rare departure from their usual routine. The couple spent the day attending sessions and engaging with other summit participants to promote sustainability goals.

“Milligan rarely accompanies the 78-year-old former governor to high-profile public events.”

The rare public appearance of Heather Milligan alongside Arnold Schwarzenegger suggests a shift in how the couple manages their private life, particularly when aligned with Schwarzenegger's ongoing climate advocacy. By appearing at the Austrian World Summit, the pair linked their personal partnership with a high-visibility political cause, utilizing the platform of the Vienna summit to amplify their support for environmental policy.