**Kylie Jenner and Timothée Chalamet have maintained a stable, public relationship since 2023, with insiders confirming they are “very serious,” aligned on future plans including children, and have discussed engagement as a possibility in 2026.** Early-year reports from Us Weekly noted the couple joking that Chalamet is “already her husband,” and he publicly thanked Jenner as his partner at multiple 2026 awards shows, including the Critics’ Choice and Golden Globes. Despite this momentum and repeated debunking of split rumors through joint red-carpet appearances and PDA moments, no proposal or official announcement has materialized by August 2026. The pair has emphasized deliberate pacing without rushing marriage, and the Polymarket market resolves only on a confirmed public announcement by year-end. Traders assign an 84.5% implied probability to “No” because celebrity timelines frequently shift, proposals require verifiable public signals, and the absence of leaks or milestones after months of speculation reflects their preference for privacy and measured progress. Key upcoming catalysts include any late-2026 appearances or statements that could alter sentiment before the December 31 deadline.