I'm Doug, and my goal is to provide you with excellent service today.
While it is possible to obtain such records, as a practical matter it can be difficult. Let me explain.
First of all, you must work very fast. In order to compel a cell phone company to turn over the text messages you are seeking, you must apply to the court for a subpoena to serve on the carrier. In order to get a civil subpoena issued you must have an active lawsuit on file with the court---for example a divorce lawsuit.
I have some experience in this area and you need to know something that the cell carriers will not tell you. That is that while they do keep a record of the text messages---the messages are typically purged from their systems after about 2 weeks---so it will be literally impossible to get the messages from the cell carrier unless you have everything in place to get the subpoena.
Another way to recover the texts is to file for divorce and ask the court to order that the cell phone in question be turned over to your computer forensic expert who can examine the instrument to try and recover the text messages which may have been deleted but which still may be present in the phone weeks or months later. This is often more effective than trying to compel Verizon to turn over text messages.
The usefulness of texts in the situations that you describe would not probably be very probative or lead to the discovery of admissible evidence---unless you were attempting to show a systematic pulling and hiding of assets in contemplation of divorce. The simple spending of community funds is not in and of itself illegal.
And in that case, the actual bank records would provide all the information necessary to proving the acts of asset secretion. I don't see how a cell phone text record would be of much use.
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I wish you and yours the best in 2015,