The saddest thing with your story is what it can do to your self esteem. No one and I repeat no one loves being rejected. Not guys. Not girls. In a situation like this where you have seen and believed to have given your all and behaved in the best possible way and your so called boy friend behaves like a case for Inspector Colombo, it can slowly and gradually have long lasting effects on you especially with regards to your next relationship.
You might think you are fine now. But wait till the next guy comes along and then the thoughts start emerging. Will he behave like the other guy? Is there something about your person that might send the new guy away? All manner of thoughts overtake your thinking process and this can be really troublesome.

Step back.
Take Heart
Get your emotions in order again.

And finally kick his ass as far as you can.

Don't even entertain any calls.