The guy I am dating is updating his online dating profile

I met a guy online about 3-4 months ago who lives in another state. We met for the first time in person about two months ago. He talked about meeting his parents and friends and taking vacation. I agree those talk was a bit early and I should not take it very serious. He referred to me as girlfriend to someone at a restaurant. He came for another visit about a month ago and is planning on coming back again very soon. He has even asked me if I am open to the idea of moving one day to his town.
However, I noticed something few nights ago that made me hesitant about everything. When I logged into my online dating account to close it, I noticed he has updated his pictures. I am certain that he uploaded the new pictures after we first met. He has logged in recently too. I then did something today that I have a mixed feeling for it; I made a fake account today in that website. He sent a message to that account. I know I should not had done it but I could not resist. I am now certain that he is keeping his options open. I feel very naive for saying no to other guys while seeing this guy. I know I should not feel we are exclusive without having the talk with him first. If he has been interested enough to come all the way to see me, why is he still active on the website? At this point, I am not sure what I should do. Should I bring it up very frankly and ask him about his profile?