Grounds for divorce in Texas include irreconcilable differences and being unable to re-unite as well as adultery, abandonment, commitment to a mental health facility for three years, a felony conviction and imprisonment for at least one year, cruel and inhuman treatment, or living separately for at least three years. The most common divorce grounds for an uncontested divorce are irreconcilable differences and living separately for at least three years because these are the two grounds that do not place blame or fault.