I want my bf to change so I have been blanking his c�lls is this a bad idea please answer?

He is so horrible to me .. But I don't know why I love him soo much I know its love, last weehe told meto come ove� he sai� he will text me when his ready but he didn't, I don't know why he does this to me. One time he cried and told me he thinks his so horrible to me and doesn't want to forgive himself. Also I found self harming signs on his bod�. I've been. Blanking his calls but I do think he will call agin but I miss him soo mucH what coul� the �eason be?