So scared...

So i’ve been dating my boyfriend for a year now. Things are just not working. We are totally two different people, there’s no connection, and we are just not the right people for each other. I’ve tried and tried for so long to make it work but i’m tired. I want to break up but i’ve gotten too attatched. I think what’s stopping me is all the good moments we have together. They mean too much. And i’m scared to live my life without him. He’s the reason i do everything.