Same-sex couples deserve the same property rights as straight couples. People, regardless of their sexual identity, should have the same access to due process when applying for any type of state license. Relationships of love should not be determined by the state, nor should any state certified marriage be given more legal protection than another.
Libertarians do not believe it is the government’s job to define marriage, however, as long the government is in the marriage business the law should not favor one group over another. Consenting adults should be free to choose their own sexual practices, personal relationships and marry whomever they want regardless of sexual identity, preference, gender.