How the extra-maritial affair should be punished for Nepali men/women here in usa? Is it totally wrong or it has some spacing to turn out to be good?And one more thing I want to ask you.Should we stich with the unhappy married life or get ride of it to search for happy life?

You need to find answer for it. everybody would have different perspective to view that issue.. and there is nothing black or white answer for it. A lot of things depend on how mature you are or your partner is and culture respectively.