The spouse of Luxembourg Prime Minister Xavier Bettel, Belgian national Gauthier Destenay has been featured in this year’s NATO Summit spouses photo as the first same-sex partner of a NATO member state leader.

Dubbed the “first gentleman,” Destenay has been married to Prime Minister of Luxembourg Xavier Bettel since 2015, when marriage equality was passed in Luxembourg. The pair had been in a civil partnership when Bettel won the Prime Ministership in 2013.

In addition to First Lady of the United States Melania Trump, Destenay was joined by First Lady of France Brigitte Macron, First Lady of Turkey Emine Gulbaran Erdogan, Queen Mathilde of Belgium, Secretary General of NATO Jens Stoltenberg’s partner Ingrid Schulerud, partner of Bulgaria’s President Desislava Radeva, partner of Belgium’s Prime Minister Amelie Derbaudrenghien, partner of Slovenia’s Prime Minister Mojca Stropnik, and First Lady of Iceland Thora Margret Baldvinsdottir.