need help plzzzzzzzzzzz

the guy that i liked before became another person that was so bad to me really before i like him much but now he wasnt any thing to me because what he said he said about me bad words and he doesnt like me and ,he said that i am like the rabbit and laugh and when i talk to him in the facebook like i said to him happy birthday in his birh he avoid me and laugh about that he didnt said any thing of this infront of me but he only avoid me and said this bad words about me to his sister and some of his family i know them and talk to them and they said what he think about me .. know i was so angry from him didnt know what i could do ,sent him messege in the facebook and then blocked him or what really i didnt know plz help me cause i became so sad >.<