I've noticed that too. If I'm comfortable with a person it is barely there. I pointed out to my boyfriend that it is gone when I'm talking to him. He did gently tell me that while it was definitely less intense when it's just us, that I do still do it to some extent always. But it's just such a relief for me to have a whole conversation where I just don't end up thinking about it. And then some days, really bad anxiety days usually, I will stutter when talking outloud to myself even.