I am hopeless

I found a great great loving guy who treated me lovely and with respect. I was so shocked by this that I became super clingy and crazy calling 22 times a day and going to his house because j was feeling like he would leave me. Now he did and j am heartbroken. When I was calling an yelling on the phone he was with his friends, now his friends also tell him that I am psycho and he should leave me. I admit and see I have a fear of Being abandoned but I am willing and working on it. But he lost hope :( I love him so much idk what to do