Again, adultery is not a crime.The part you said thawa kenek ta neethi daanna baha. You can be called upon in to a case if infidelity is involved. So law considers not only the husband and wife. But other parties too. So it's not like just because you find someone better, you can dissolve your marrand go to them.
You are free to associate with whoever.
The legal spouse can claim damages in a divorce. That's it.