it means that you say what you truly feel no lies no deceit you just trust that person enough to let them know how you truly feel <br />
this is what i think a heart to heart conversation is
wow lol i never thought of a heart to heart convo in that way, but your unique definition described in your question sounds pretty wonderful. speaking without words is a deep form of intimacy shared between two lovers.
It means that your heartbeat understands the beat of another's heart.