Yes, thank you, Pixie Stix, I had not seen the video, but I knew about the Seeking Arrangements profile and remember looking into it. They claim to have over 10 million members, and they appeal to college students as a means to pay their tuition and college expenses.
That was when I researched the "online only" meaning, as KL had said she had two online only connections. It involves making and sending videos and pictures instead of actually meeting in person.
So, since she had accessed the site on the same day she was texting with AA, I guess it's possible that he contacted her through the site. Maybe it was at that point that she gave him her phone contact information, if that is the first time they ever texted.
It's hard to say since LE has been careful not to reveal too much information about how they connected and what their relationship was. Imo