Tex. Bus. Orgs. Code § 101.155
A creditor of a limited liability company who extends credit or otherwise acts in reasonable reliance on an enforceable obligation of a member of the company that is released or settled as provided by Section 101.154 may enforce the original obligation if the obligation is stated in a document that is:
Acts 2003, 78th Leg., ch. 182, Sec. 1, eff. Jan. 1, 2006.