But men DO sometimes play hard to get... and I've heard about guys having some three day rule - like don't call a girl immediately the next day after a first date, wait until the 3rd day - and so on. Basically, it's hard to not be impatient when you like someone, but you just have to gain control of that a bit for now while you try to measure how he feels; how much he likes you. So balance it out. If he calls you, great... don't rush, but call him back. If he emails you, email him back. Good luck!
To be honest and blunt i don't think you have a deal to break as such.
He owes you nothing at this point.
I give the guy credit for being polite enough to let you know that he had a change of plan....
He did say he would only email you if he didn't end up going...he
Thank you both for your replies.