Re: Present incriminating evidence
From personal experience, this happened to someone I know. They actually accepted the rishta from the boy, but after engagement party, someone told them the boy took drugs in the past, unknown about present. The family felt they couldn't back out of the union now that they were engaged and so they were married.
Now they thoroughly REGRET not breaking it off before they were married, bcos his old habit re-surfaced.
Really, if it was me, I would WANT someone to tell me about it.