Tex. Fam. Code § 161.007
(a) Except as provided by Subsection (b), the court shall order the termination of the parent-child relationship of a parent and a child if the court finds by clear and convincing evidence that:
(b) If, for the two years after the birth of the child, the parent was married to or cohabiting with the other parent of the child, the court may order the termination of the parent-child relationship of the parent and the child if the court finds that:
Added by Acts 1997, 75th Leg., ch. 561, Sec. 8, eff. Sept. 1, 1997.
Acts 2007, 80th Leg., R.S., Ch. 593 (H.B. 8), Sec. 3.31, eff. September 1, 2007.
Acts 2013, 83rd Leg., R.S., Ch. 907 (H.B. 1228), Sec. 4, eff. September 1, 2013.