My first reaction was to ask the reader for more information to clarify her situation. From what I can understand, the two of them share a cell phone, and she's getting text messages from an adult dating site, asking her to join, sign up, or visit. I'm answering the question with this assumption in mind, although, I'll cover the other possibility at the end of this post. Therefore, to answer: what you've received is most likely spam. A quick search for speak-live. Could this dating spam have come from your boyfriend's former adult dating site use? It's possible, yet more likely that your cell number got thrown into some database somewhere similar to emailed internet dating scams.