+1! I suspect that his trust issues would seriously hinder any attempts at rekindling a romance with Marci. She worked for shady Landman and Zach, and now she works with/for shady Hogarth. I can see Foggy isolating himself from making friends at HC&B because while it's an amazing career opportunity, he doesn't think he can trust any of the other lawyers.

I can see him seriously distrusting Karen as well after season 2, especially if she were to let it slip that she worked with Frank more than a few times.