A lesbian couple in Ecuador who engaged in an argument with President Rafael Correa on Twitter applied for a marriage license in Quito on Monday, beginning the fight toward establishing legal marriage equality in their country.

Pamela Troya and Gabriela Correa submitted their application with the civil registrar, and though it is expected to be rejected, they can then wage a legal challenge to the country's marriage ban, Buzzfeed reports.

Troya, the head of Igualdad de Derechos!Ya!, took President Correra to task on Twitter, when he voiced his opposition to marriage equality earlier this year.

If successful, Ecuador could be the fourth South American country to establish full marriage rights for same-sex couples, in addition to Brazil, Argentina, and most recently, Uruguay.