The church does not get to make rules about sexual morality

The definition of marriage has changed so often throughout history and between different cultures, and the church itself has not been consistent:

From a great article on the topic: http://www.patheos.com/blogs/godlessindixie/2015/05/22/the-church-doesnt-get-to-make-the-rules-about-sex-anymore/?utm_source=SilverpopMailing&utm_medium=email&utm_campaign=godlessindixie_052215UTC070540_daily&utm_content=&spMailingID=48718920&spUserID=MTMxNjYyNjQyODc3S0&spJobID=682752038&spReportId=NjgyNzUyMDM4S0