I loved him? But I made a mistake? Now he ignores me?

I'm 13 & I know no one thinks you can love somebody when you're young but I did. I dated him for 2 years & I told him i loved him all the time & he said he loved me. He made me smile & he made me happy. Lets call him bill. There is another boy lets call him jo. Well jo is super popular & a year older. He liked me so i broke up with bill for him. It was stupid I know. I want to talk to bill but he wont text me or answer my calls. Its summer right now so no school. I don't know how to get him to answer me. No hate PLEASE! just support