Should the suitor be informed of the possibility of the hymen being lost before marriage, or can this be delayed until the wedding day?

As long as you are chaste, you are not obligated to inform your husband about the loss of virginity; as it can be lost due to causes other than indecency, such as a fall, insertion of a finger, severe menstruation, or prolonged spinsterhood. The husband must think well of his wife. If your husband asks you, tell him what removes doubt. The Permanent Committee has issued a fatwa that there is no شرعي (Islamic legal) impediment to concealment, and to inform the husband of the truth if he asks after consummation.