As an anti-gay marriage letter circulated around the Texas House Republican caucus garnering signatures quicker than you can say "homophobia," one GOP lawmaker is breaking ranks with the party and has become the first Republican lawmaker in the state to publicly support same-sex marriage.

"I just don't agree with the sentiment of the letter," said Rep Sarah Davis to the Texas Observer. "I don't feel the need to pass legislation or vote for legislation that prohibits two adults who love each other to be able to be joined in a civil union or marriage. It does not affect my marriage."

Davis was one of five out of 98 Republicans in the Texas House not to sign the letter, which was drafted after an anti-gay marriage bill died before reaching the floor.

With endorsements from Log Cabin Republicans and Equality Texas, Davis, who is also a maverick with the party on reproductive rights, Davis if far from hiding her progressive opinions.

"This is not breaking news, and if someone chooses to run against me in the primary and wants to make abortion or gay marriage an issue, then we'll face that," Davis told the Observer. "I've had contested primaries in the past, and those issues have come up, and my margin of victory actually increases every election."

Finding a Republican with anti-gay views to challenge Davis over gay rights wouldn't be too difficult. In 2014, the Texas GOP approved plank language in their platform that endorsed "reparative therapy" for gays.

"We recognize the legitimacy and efficacy of counseling, which offers reparative therapy and treatment for those patients seeking healing and wholeness from their homosexual lifestyle," the platform reads. "No laws or executive orders shall be imposed to limit or restrict access to this type of therapy."

From our media partner EDGE