Am I just the worst or are these normal feelings ?

This last year I have started dating after my boyfriend passing away suddenly four years ago and the majority of the ppl I meet are from online sites . I had an amazing date Saturday with a guy I had been talking to for a little over a week before we met up and we talked Sunday and today and everything has been very Normal but I haven't heard from him on a few hours and saw that he was online on the dating site and I feel super discouraged and upset now . If he was really into me I feel like he wouldn't still be looking at it . Or am I being insane and this is new . Dating is just so hard I don't know how to act or feel . Help me ?