In his book, Till Faith Us Do Part,(1996) Rabbi Jonathan.A. Romain considers attitudes to mixed faith marriages. He states that, Christians, Hindus, Jews,Muslims,Sikhs, who fall in love with each other may retain a deep respect for the views of their families and the requirements of their faiths. However, in many cases, emotions now take precedence over religious traditions. This, he says, would have been less likely in former years. In contrast, there is no issue with mixed faith marriages in Buddhism.
“A fish and a bird can fall in love,
but where will they build their home?”
(from: Fidler On The Roof)