About 164 Statement Infront Of Magistrate And Chance to Win My Case?

Iam a victim i already given 164 statement in ipc 376 but i forgot to say some important matters . Is it affect my case during in trial ? Is there any second chance to 164 statement? already charge sheet filed. I want to add extra matters missing in 164 before the trial court is it possible? Is Sex on false promise of marriage is punishable ?how much year? How can i win this case what proof needed? Me and accused loving 7 years but one time he cheated and rape me after that i never meet him but he contact me and given promise i will marry you dont complaint against me it harmful for both of us. I believe his words but after 2 years of that incident he cheated again not interested to marry me . I given complaint against him. But due to 7 years of love he may create it is a consent relation but it is not true how can i win this case . After that incident we contact for 1 year due to his promise but i forgot to say his promise on 164 statement