In Texas a child residing in this state may be adopted if:

• The parent-child relationship as to each living parent of the child has been terminated or a suit for termination is joined with the suit for adoption.
• The parent whose rights have not been terminated is presently the spouse of the petitioner and the proceeding is for a stepparent adoption.
• The child is at least two years old, the parent-child relationship has been terminated with respect to on e parent. the person seeking the adoption has  been a managing conservator or has had actual care, possession, and control of the child  for a period of six months preceding the adoption or is the child’s form stepparent, and the nonterminiated parent consents to the adoption.
• If the child is at least 2 years old, the parent child relationship has been terminated with respect to one parent, and the person seeking the adoption is the conservator or has had actual care, possession, and control of the child for a period of one year preceding the adoption.