Don't take revenge - or dwell on inventing acts of revenge. It would make you no better than him! Also these things usually have a way of backfiring.
Report him to his ISP perhaps? Get him in trouble for what he has done to her, don't sink to his level.
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Time is an illusion. Lunchtime doubly so.
Epona of The Laughing Hyenas
Proud winner of the 'Most Useless Post 250 Has Ever Seen' Award 2001. "I'd just like to thank my friends and family, without whom none of this would have been possible..."