"C'mon," Sweetie replied, "I'm not stupid.  Why tell me you cheated on me without me having to pry it out.  On film too!  If you'd really cheated, I don't think it would have been so easy.  If you'd really cheated, I'd have had to pry it out of you in private."  She took a step forward, putting a hoof on his cheek gently.  "I want the truth Button."  She forced herself to look into his eyes while forcing him to look back.  "I can't take dealing with the doubt anymore.  Everytime you lie, I just can't help but feel that you're lying to avoid telling me that I was the problem.  I can't help but think that I did something wrong, that I was-"