You contacted him.....that means regardless what anyone says you will still go to him cause you still love him and believe in him.....I wish you the best but people don't change over night, it takes time. If he is sincere you will see it in action and not just words and if not than you know what you MUST do if you're wise.
you gave him a chance. You just haven't been through enough pain yet?
Only you can decide ,I can be to nice to and have been burned many times . My advice would be no your young enough, move on lots more to come
No blahblah. No you need to break up!
No to the chance... and no to really changed...