If you were engaged to be married when the rape happened tell your partner immediately. If you don't tell him that is deceit.
He has the right to know because of your relationship with him how you would feel is something close to your experience happen to him and he did not tell you about it.
What do you mysteriously get to know from another source. If a rape happens before you meet him study him first to know if he could be trusted with your past without blabbing about it. If you feel you cannot trust him or you perceive that he will not marry you even knows about your past then that is an indication that something is not right with the relationship.
Such a relationship may not stand the test of time. If you hide it from him just so that he can marry you, the shadow of the past we keep on hunting you and this may prevent you from enjoying your marriage.
Love is based on trust where there is no trust, there is no love true love gives no room for the deceit or secret.
If you truly love him, tell him everything at the right time and damn the consequences. Do so before marriage. If he truly loves you, it will stay and respect you for it..# headerbold