He swears that he is not gay, but I think he might be a bi-sexual. He is a wonderful guy and treats me well, but these recent discoveries are making me think twice. You don't need to confront him about anything if disentangling yourself from the relationship is want to accomplish. Just tell him that things aren't working out for you, and you don't want to date any more. Then clean up the disk drive to remove all offending pictures.
People can change if they are motivated to do so.
That is basically just up to what you can deal with and what you can't. You are allowed to have whatever feelings you have about the matter. Anne has been helping the confused and heartbroken for over 10 years. She's here ready and willing to listen and share the wisdom gained from years of personal experience. Anne is not a professional psychologist or therapist and offers her opinion as a mentor or friend only.