I have looked as well and can find no report or record of a charge of prostitution or solicitation of prostitution filed against Gilbert.
There is only several reports that he testified that he paid for time and expected sex.
§ 43.02. PROSTITUTION. (a) A person commits an offense
if he knowingly:
(1) offers to engage, agrees to engage, or engages in
sexual conduct for a fee; or
(2) solicits another in a public place to engage with
him in sexual conduct for hire.
(b) An offense is established under Subsection (a)(1)
whether the actor is to receive or pay a fee. An offense is
established under Subsection (a)(2) whether the actor solicits a
person to hire him or offers to hire the person solicited.
(c) An offense under this section is a Class B misdemeanor,
unless the actor has previously been convicted one or two times of
an offense under this section, in which event it is a Class A
misdemeanor. If the actor has previously been convicted three or
more times of an offense under this section, the offense is a state
jail felony.
I don't think an expectation that existed in his mind can be construed to be an offer or agreement or engagement in sexual conduct for hire. And for solicitation to be charged, it would have to happen in a public place, not in his home.