This is where i just don't understand the guys sometimes. When a girl do sometimes cancelled a date for some reasons, regardless of if they reschedule another date or not. Why wouldn't a guy just act as a gentleman, accept and respect her reason of not being able to make it as planned and just move on till you hear something from her.
I have been in a situation where the guy got so aggressive and annoyed that he actually insisted that i "Must" meet up with him, he kept sending me one text message after the other until i finally Blocked his number. All his excuse was how "He liked me So much and was really into me" So i have to like him back! Everything happened so fast and i was so glad i dodged that bullet.
In a situation like this, the only thing that could have changed my mind to go out with him regardless of if i was really sick or not, is if he had behaved himself like a "Real Man" by just being humble, understanding and respectful. Instead of starting a fight of text messaging, kind of my way or the high way.