i cant get over

my boyfriend broke up wid me and shitted about me in public calling me a slut as i cudnt satisfy him for the first tym( only for ruining my name). His frnds believed and they all think i am cheap. I lost many frnds for dat reason. now he has got another gf and said sorry to me just to impress her. And i to maintain my ego told him dat i was also playing wid him like he did ( i know my lie here is a mistake).Now he is head ver heels in love wid her new gal and i cant stand it.. i feel abused and used. i can't forgive him.