Q. See question above. How about if the couple is a mixed one, and one of them isn’t Jewish, what is the proper thing to do?

A. In such a case, one should definitely avoid even any congratulations.
However, it may be worthwhile to approach their friends and family and see if there are any ways and means to correct the situation.

Some different scenarios are also likely available and the proper Rabbi who has connection with the couple and their family should be contacted. Also, since there are known Kiruv organizations that constantly deal with such cases, they should also be contacted.Rabbi A. Bartfeld as revised by, Horav Dovid Pam, Horav Aharon Miller, Horav Chanoch Ehrentreu and Horav Kalman Ochs Shlit’a