Gut feelings

Hi! I’m reading the book “Emotional Agility” (off to a great start), and the author mentions the concept of “gut feelings” that tell us someone is lying or that something is wrong with a friend, even when they say they are fine. How would I think about that in terms of The Model, if I agree that our thoughts cause our feelings? Would it be that we think that subconsciously someone is lying, and that triggers the feeling in our gut, which then reminds us that we have a thought that they are lying?