He screwd me over, how can i get over it?

Admit that you he is not a part of your life anymore and that you might be down now, but you will be able to make your life better. DOn't let him ruin your life, you already wasted a year on him, don't add any more time on him, ok. Concentrate on your future. Get help with your drinking, listen and spend more time with your friends, you need their support now. Take it one day at a time. Good luck.