Sometimes, when I was with my best friend, I completely zoned out without ever knowing why or without being able to control it.
My voice turns flat, I suddenly feel numb and it’s harder for me to concentrate and my head feels a little foggy. 
She’s taken it personally a lot of the time, but I genuinely don’t know why I do that. It happens more often when I’m with her than anybody else, but I have realized it occurs comparatively more often with closer friends. 
Do you guys experience the same thing / know why?