My name is ***** ***** I'd be happy to answer your questions today.
I'm sorry to have to tell you this, but you don't have any rights. In general, unmarried partners do not have any right to alimony
when a relationship ends or to any property owned by the other partner. There has to be some kind of written agreement that would allow for it.
In your case, though, there's an added wrinkle. Texas is a community property
state, which means that the spouses are supposed to jointly manage and dispose of property. If he tried to give you some part of the community property, his wife may actually be able to prevent it. He'd only be able to promise to give you some portion of his personal earnings deposited into his OWN bank account (not a joint account) or money that was his separate property before they married. The law values the marital relationship very highly, and so there are a lot of protections afforded to spouses that unfortunately are not available to third parties.
The only way you would be able to claim anything at all from him is if he signs a written agreement and his wife doesn't contest it. You are, however, entitled to keep any and all gifts he gave you, and you're entitled to half the value of anything you bought together (like if you bought furniture or something).
I apologize that this was probably not the Answer you were hoping to receive. However, it would be unfair to you and unprofessional of me were I to provide you with anything less than truthful and honest information. I hope you understand.