Girrrrrrls

So...I have a confession to make. I recently broke up with my ex. Things were always shaky between us. He no longer turned me on is what you could say. It wasn't his naked pictures I'd look at while touching myself. I got off by watching lesbians or just two girls having oral s**. I'm a female and straight or at least I think I am. Would you consider this cheating? Should I have told him?