Some meretricious relationships last for many years and considerable comingling of financial resources can have occured. This describes many gay relationships.
Alimony (aka "maintenance") in the meretrious relationship is not avaliable to unmarried couples of any sex (TFC 8.001) Although there is no remedy for a partition of these comingled assets and debts under the Texas Family Code, the parties may find some relief under civil remedies of trusts, unjust enrichment, joint venture, or partnership.
Contractual Palimony is one option for unmarried couples to protect their economic interests. However, such contracts must be in writting and signed by the person obliged to the agreement. (TFC 1.108) Individuals interested in non-marriage cohabitation should consider entering into a Domestic Partnership Agreement.
For Houston area gay couples considering a cohabitation agreement or other related issues, I would highly recommend my friend Jerry Simoneaux and his firm of Nechman, Simoneaux and Frye, PLLC. www.nsflaw.com.