I've asked this before but it was a long time ago and maybe someone has found out exactly how by now.
How can you make Christa and Omid not come with you at the end after showing the bite? I know there is a way other then to hide it, I want a couple of my runs to show the bite and have just Kenny on my Pro-Kenny save, and and just Ben on another one. Do you have to be a complete jerk to them throughout Episodes 3 and 4, or is there a single dialogue option that can make them not come with you or to convince them not to come after showing?
Thanks in advance!