How can I defend gay rights as individual rights?

Recently, a Colorado court issued a cease and desist order to a local bakeshop which refused to bake a cake for a gay couple's wedding. Being a gay person myself, I find the refusal of the bakeshop to be annoying and idiotic, but I vehemently disagree with the court's decision: I believe the owner of the bakeshop has a right to his own property. However, I have a few gay friends and a few liberal friends who think this Colorado court ruling was a step in the right direction for gay rights. I think the opposite, but I support "gay rights" in a way that's consistent with the concept of individual rights. How can that be explained and defended in a rational way? In other words, how can I defend the rights of gays to marry without suggesting that the government should force people to associate or conduct business with gay people?