My girlfriend wants to leave me over GLP!

You heard it...She seems to think I have developed unhealthy relationships and am emailing girls on this site to try and distance myself from her and to get a conspiracy chic. She also took the poll I did about hottest GLP chicks out of context and proportion. Last night she argued with me, would not let up on it. Today she wrote me a six page note going back and forth but basically saying we shouldn't be together. I know that usually a person will not make an attempt like this to end a relationship unless there is a third party invovled. There is none on my part, so logic dictates she wants out and has a safety net set up. Should I just let it go? I really am too tired of the issues and arguments. There is distrust of me in her eyes, I'm no angel, but I have been trying real hard to be honest with her for years now. It has just been tiring, the general interrogations, accusatory tones, and invasion of privacy.