Strawberry,
I'm proud of you for having the courage to tell your dad everything and showing him the evidence. See, I told you to print out those emails before the guy deletes them. And I like the reassurance that your dad gave you in taking care of things. And inshaAllah everything will take place for the best:)
I understand that you have imagined your whole future with him and it's going to hurt to move on. But what's the point of hoping for a future with someone who is so immature and not serious about you at all?
All those dreams/daydreams that you had about your fiance are just fantasies. And in our fantasies, people seem a lot better than they do in real life. Our imaginations are powerful enough to make a person seem really nice/amazing/romantic........when in real life..........the person is NOTHING like that at all. It's like watching a movie in your head. It's like watching a wonderful movie inside your brain whilst also wearing rose tinted glasses.
Don't fall for fantasies created by your own head......when reality has proven otherwise. Be thankful to Allah you found out the truth about him. Think of it as being saved and try to appreciate it. It won't be easy to move on.....but it's not impossible. And in the future, you'll find someone who is a really nice guy.....and not just in your imagination.