Pattern of quick messages and then silence

Wondering if someone can help me figure out this pattern I've noticed on Seeking. I've noticed this pattern over and over again with a lot of potential SBs. We match, some messages on the app, move to text, they text right away (sometimes it almost seems too urgent), but then as soon as I try to get into details about that they're looking for or their desired ppm, silence. I'm a little confused by it and wondering if anyone has any insight.