Sensitive Teeth

Is anyone noticing they have sensitive teeth, off and on, but way more frequently the past year, than in the past??  My partner and I get this simultaneously, as well, which is so weird, so unexplainable.  No, it ain’t cold foods, or hot foods, or both, no grinding, no receding gums, none of that.  It is the weirdest thing.  I am so curious to see if anyone else is experiencing this.