Of course we are not aware of the circumstances in which this photograph was taken and
can only guess as to what was going on.
A moment frozen in time like this can suggest a lot but can be misleading as well.
The expressions do hint at a certain tension between the two and your title lend further
credence to that impression.
There is a look of tension around both mouths and a certain faraway look in the eyes.
I have heard it said that ” the camera never lies” but I’m not sure if that’s true.