What Guys Said 1
4-5 days is a bit much. Something might be wrong there. It's best to ask him what's up. Maybe something is going on like family business or whatnot. But that definitely isn't normal.
What Girls Said 1
He found some1 else and he is using the 'if I avoid the situation, she will get the hint' manuver (sp?) or he is lying in a hospital bed in a coma. It is either or I am afraid because it does not take that long to send a quick text - even to say, I am sorry but busy and miss you. (c= Do you know any of his close friends or relatives?