Yeah, I wouldn't do the revenge thing.
Here's one though... Hiring two of the hottest escorts around who would be all over you at the same club or bar she was at would throw her for a loop.
Yes, "hire"! wtf? You're not that hot. lol Ehh.
Yes, it's tacky, but will she or will she not be jealous?
Ehh, I don't know man. anything you do with revenge on your mind will show. THAT will mean you're not over her or at least 'affected' by her. Not good IMO.
Can you just kill her? Is it illegal in your state to kill her?