How do you get over a divorce and why would that spouse not feel remorse?

So now I am officially divorce now. I have mix emotions sadness , Anger at the same time. My ex husband (29) will be turning 30 within a few months cheated on me with his Amway upline woman who happens to be 12 years older then himself not sure what things they have in common. In court he kept smiling trying not to laugh and smirk everytime the judge had asked him a question. He put Amway and his stupid hoe first before his family. I felt like someone had slap me in the face when I saw the two of them walking out that courtroom smiling holding hands. How can someone not feel guilty remorse? How can that would man go to sleep at night knowing she ruin a marriage? My ex-husband answer was that his Amway platinum advice him to live his family and get himself an Amway female.
Updates
+1 y
Sorry of my grammar I am angry at this moment.
How do you get over a divorce and why would that spouse not feel remorse?
Post Opinion