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Sinema Sued in Federal Alienation-of-Affection Case Alleging Affair With Security Aide

The case was removed to North Carolina’s Middle District this week with a referral to mediation.

Overview

  • Heather Ammel alleges former Sen. Kyrsten Sinema pursued a romantic relationship with Ammel’s then‑husband, Matthew, leading to the collapse of the couple’s 14‑year marriage.
  • The complaint, filed in North Carolina state court in September 2025, was moved to federal court in January 2026; reported damages sought range from at least $25,000 to at least $75,000.
  • According to the lawsuit, Sinema sent sexually suggestive messages and a towel photo, bought gifts, took Ammel on solo trips and concert outings, encouraged MDMA use, and paid for psychedelic treatment.
  • The filing says Ammel, an Army veteran hired to Sinema’s security team in 2022, was placed on her Senate staff in mid‑2024 and separated from his wife that November.
  • Sinema and her attorney have not provided substantive comment, the allegations have not been adjudicated, and her public appearance in Utah on Friday drew brief protests referencing the case.