Cam: I know this is about Booth, and my advice to you would be to trust him.
Brennan: I feel the intense feelings of romantic love are fading from our relationship.
Cam: Have you looked at Booth lately? He's miserable. If what you're suggesting were actually true, you'd both be experiencing relief. Do you feel relieved?
Brennan: I don't always know what I'm feeling.
Cam: Well, you are not relieved, Dr. Brennan. You're miserable. And so is Booth. And that is love.