Watch Diary of a Sex Addict for Free: How to Stream the Movie Online at 123Movies. . Diary of a Sex Addict When you're addicted to sex, where and how you get it doesn't matter - in public restrooms, the sex club, or even at home with a stranger off the street. Sit back and let award-winning director Tony Dimarco weave a tale of sex and desire with eight horny hunks that paint a tantalizing picture in Diary of a Sex Addict.