I have been in the same exact situation as you, only it was 2 years of him not wanting a title of boyfriend/girlfriend, but him wanting all of the benefits of that title. Throughout us being together he would say that he didnt want anyone else, and he didnt want me to be with anyone else but I later found out that it was because he had still been with his "ex" the whole time we were together. We would go on dates, hangout almost every night, I would post pictures of him, he had met my family, but he still had managed to sneak around behind my back and have another woman. I suggest you guarding your heart and making sure there are no under lying things going.