Revenge - Is it?

Is it revenge? Is it unfair? In my mind, hell YES! Before I do something stupid, I need someone to talk me off my high horse and be a devil's advocate.

Married 18 yrs, 1 sprout, picket fence.. the whole sha-bang. He divorced me 5 yrs ago for another woman. At the time I struggled within our marriage (sobriety/abuse) 6 mo's later x quit drinking & showered new girl with all the love & affection I needed to save our marriage. Fast forward, I find our she is a scam, a lier, and works as an accountant for a huge Insurance company, without any of the educational creditials to support her job. I too am a professional educated finance/accoutant degreed professional.

Should I expose her?