WIY: I tend to agree with you (and disagree with aries) in the vast majority of discussions, but here I am having trouble believing you could make such a clear-cut claim. If a girl didn’t tell a prospective shidduch that he isn’t her first, the marriage could be halachicly invalid. That isn’t the case in the reverse, nevertheless not mentioning such a major point, would seem to me, be a breach in trust, protocol, and honesty. Perhaps regarding other (lesser) issues this point would not be applicable, but on such a major issue, it is difficult seeing a way around it.
