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 alisema he alisema about me bad words and he doesnt like me and ,he alisema that i am like the rabbit and laugh and when i talk to him in the Facebook like i alisema to him happy birthday in his birh he avoid me and laugh about that he didnt alisema any thing of this infront of me but he only avoid me and alisema this bad words about me to his sister and some of his family i know them and talk to them and they alisema 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 au what really i didnt know plz help me cause i became so sad >.<