Nothing you can do will ever make you feel you are “even”, and we all have quite enough enemies already.
Pack up his/her shit and put it on the lawn. Change the locks. Don’t speak to him/her at all unless absolutely neccesary, and then as little as possible. Get the best, most evil lawyer you can find (even if you can’t afford it). Get the house, the car, the kids (if applicable), and as much money as possible.
If this had been an isolated incedent, you might have worked it out (but you would still never feel “even”). But, as an old proverb says, “fool me once, shame on you. twice, shame on me.” No person deserves to be treated with such disregard, and you should NOT allow youself to be.
For what it’s worth, it may take years, but one night he/she will wake up at 3am and realize how much pain he has caused. That one moment will do more deep, personal damage to him/her than anything you could ever hope to accomplish through “revenge”.