Hi Lou, if you are still there, He's just not worth it, even if he came begging on his knees with every excuse in the book , he still wouldn't be good enough for you. He;s shown you how weak he is! you have given him all your support, all your emotional intelligence to ensure he achieves, all your warmth and encouragement. He used it to make himself feel strong and powerful!. Just think what you could achieve for yourself if you focused that attention and support on you!!.
In my experience he won'y change, because he can't. You can give yourself all the energy you have wasted on him, you can be your own best friend, your own cheerleading squad, everyone on here knows you are fab, believe it, you will be the best at whatever you want to be, try being your own best mate for a while, think what you would be giving as advice, and take it!
Whatever you choose to do, own it and know its right, learn to feel confident to beleive in your feelings and instinct because that's you and you are good enough,
Ignoring is a good way to go, this fucker won't ever acknowledge your feelings so you have to take charge, fuck him, fuck his stupid , pathetic attempt at coming across as a nice guy, its a better person that walks away before they shit on another person, so this is his his crap not yours, you are not responsible for him and his failings, just focus on being yourself, do what feels right for you, don't stress about coming across as bitter, he'll dig his own grave, by which time you will have moved on so far you'll be able to be generously indulgent of his crap life choices and say ahh bless, what a twat, !!!!