How to lose tons of weight in short time?

i am 22 and my height is 167cms and i weigh 102 kgs.that is around 224 lbs..i need to lose 42 kgs that is 92 lbs and i need to lose it fast as i am getting divorced and next time i see my husband i want him to regret what he has lost.not that i want him back but just want to look my best as he cheated on me coz of my weight..plzzz helpp