Well Sassy, since you've posted it in a public forum it's no longer a secret, and what you described hardly qualifies as being dirty. Erotic self-stimulation while listening to Bon Jovi might qualify as a dirty little secret, but taking notes doesn't. You're out of the closet but still sweet and innocent.
I write things down all the time, just to help me remember them. Interesting words I encounter, pithy aphorisms, nice turns of phrase, I record them for my own amusement and education. For instance, recently I encountered the words otiose, morganatic, sterquilian, and ultracrepidarian, and of course recorded them and their definitions in the notebook I always have with me. Wonderful words, English is a fabulously rich language. Look 'em up, I'm sure you'll be as amused and entertained as I was.
Edited because: Damn, spelled one of those wonderful words wrong.