She betrayed me after I helped her?

Ok I was dating this girl for awhile and when we broke up I told her it was fine and the reason was for another guy and I said if ya want him, go for him, and Ill help if you need me. But she starts lying and tellin my friend me and her never dated and she only wants him and she said she never talked to me..... What Im asking is, should I say something or let it go?