Interesting article. Thanks for sharing your personal secrets. IMO, this emotional sensitivity is directly traced to the way you interacted with your adult caregivers as a baby and child. What kind of bonding and attachment behaviour developed (or not developed) during that period :-)
BTW, it happened to me few times to auto copy someone's accent. It was unintentional and embarrassing :-)
But I understand that it is how our brains work when they try to find common communication to easier connect in social interactions.