I too got a text from this same number, but they knew my name. Ironically, I also live in Texas, south of Houston. I tried calling it and it said it was a textPlus number.
I got a message from this number too saying hi and then my name. I replied back hi and that sorry but didn't know who it was. they replied back "lol if you want to know who this is u got to add me on yahoo messenger. my name is txtflirt36" I obviously didn't because frankly if I don't have them in my phone it's probably a reason. I would say total scam!