I often ask my couples to just have conversations with each other during the session to try to forget about me. Usually its goofy questions in the beginning, since both people are trying to get past that "oh shit, there is a camera pointed in our direction" feeling. But later on, it changes to the sweetest of exchanges.
I usually only get little bits of it. Which I love. Sweet little whispers of affirmations and I love yous, and I can't believe we soon will be married.