I have been on 3 dates with a new man and our 4th date is this Saturday night. He always calls within 48 hours (usually 24) of a prior date to schedule the next for the following weekend. This past weekend he texted me after leaving Saturday night, texted Sunday morning, and called to make our next date Sunday afternoon. I have not heard from him since his Sunday afternoon call and it is now Tuesday afternoon. Last week it seems like I heard from him every day. His contact is usually limited to times outside of the work day, which is understandable since he has a busy job. I just thought I would get an email from his last night, which is usually how he usually communicates during the work week, but I received nothing. I can't think of any awkwardness during our last telephone conversation and, in fact, he asked me whether I am ever available both Friday and Saturday nights to which I answered "Yes, sometimes I am" in my most positive tone of voice (he has had me pick between Friday and Saturday nights heretofore). I've made a point of never initiating the contact between us at this early stage. I can't imagine he would just ghost me after setting a Saturday night date, but should I be concerned over not having heard from him for longer than usual?