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