I have been dating a man for the last 6 months. We talk, go out to dinner, are intimate, spend the night at each other's places, ect. He says that he trusts me and he sends me texts throughout the day. I've mentioned that we are not facebook friends at least 3 times and he always manages to change the topic. What are some possible reasons on why a guy would do this? Is he hiding something or am I just over-reacting?