Unless he was involved in some sort of accident or some kind of tragedy happened to his family, it's relatively unlikely. Guys are normally very persistent when it comes to the women they care for. So if a guy likes you, he will be ALL over you, doing his very best to make sure that you know he likes you.
If I am interested in a girl, I can never imagine myself not talking to her for a month. Once I gain means of contact with girl, I am constantly talking with her, as long as I am invited to do so. That is how it normally works.
