Matt Damon discusses his long marriage to Luciana Barroso and describes a “non-negotiable” rule in their relationship, according to a report. Damon and Barroso have been together for about two decades and have three children together, the report says. Their daughters are Alexia, 27, Isabella, 20, Gia, 17, and Stella, 15. The sources provided focus on Damon’s comments about how the couple maintains their relationship, highlighting that they follow a specific principle they consider essential. Beyond sharing their family details and the existence of this rule, the available excerpts do not specify what the non-negotiable rule is, nor do they include additional context such as where Damon made the comments or how the rule is implemented day to day. The reporting is centered on the couple’s marriage longevity and their family life, with the main new element being Damon’s statement about having a single, defining requirement for the partnership.