Should I expect him to be able to see my pain? The other day was particularly bad as he started telling me how OW was a better match for him because she never complained, was always cheerful, etc., She also was a 21 year old with no responsibilities except herself and they only had a 7 week relationship in total. So yeah, they never argued, go figure.
As hard as it is to keep our chins up, I think if he doesn't want to see it, better not to show it, at least for now, because by getting too emotional you are just confirming the bad thing he thinks about you. There may come a time for that but you need to wait until he owns up to what he did and expects you to be angry at him.