Re: Present incriminating evidence
You or your cousin must ABSOLUTELY tell the girl. I don't see how not telling is even an option.
Why shouldn't a person be judged on his past if that is all is available? Sure, people change. But if I don't know the person, then the only source of information I may have is his past. I'd rather judge a person on his past actions( and therefore, perhaps wrongly) than trust his word blindly, because it is a question of my future. There are many other less serious instances when its better to give someone a benefit of your doubt. This certainly is not one.
From there on, its her choice.
It will be too unfair if she finds out and regerts a little too late.