Luxembourg’s openly gay prime minister Xavier Bettel is this week marrying his longtime partner, architect Gauthier Destenay.

Same sex marriage legislation was passed in Luxembourg in June last year with a landslide vote of 56-4, with weddings beginning to take place in January of this year.

The European nation is the only country in the world to have both an openly gay Prime Minister and openly gay Deputy Prime Minister.

Bettel became Prime Minister in 2013 at 40 years of age. He is the third openly gay head of state in the world, after Iceland’s Prime Minister Jóhanna Sigurdardóttir, who was in office from 2009-2013 and Belgium’s Prime Minister Elio Di Rupo, who was in office from 2011 to 2014.

Bettel and Destenay have been in a civil partnership since 2010. Destenay reportedly proposed to Bettel in August of last year.