Is this wrong or am I wrong

Met this guy on the POF dating site. Havent been dating very long now and he seems to be very loyal. Ive never been one to look at anyones phone but i grabbed it to be cute and post on his fb and he still has the POF app and logged in. I couldnt see if he had been talking to anyone but he still has the app.. now he keeps asking me wants on my mind.. should i be concernd