First off there is no "have to" around conversion involved in getting married. A Christian and Buddhist (or any other combination of faiths) can marry or date and:
It is, however, wise to talk these things over before they become a problems. It is also wise not to let the families interfere as it is not their lives.
When it comes to the marriage ceremony the service may need to be a civil service if the clergy of the sides cannot act like adults.
If she is Muslim she must marry only a Muslim man,if she is Christian or Jewish she can marry a Muslim man, andif she is neither Muslim, Christian, nor Jewish she can marry a Muslim man only if she converts to Islam, Christianity, or Judaism (of course preferably to convert to Islam religion).
No, is not compulsory that they convert before marrying a Muslim man.
A Muslim man is only allowed to marry Muslim, Christian or Jewish woman, but should be modest and conservative women.
Yes, if she converted to Christianity.
this is one of better way to convert christian to islam .
No, because one of them need to convert or in Hinduism or Mar Thoma Christianity.
No it would be a GREAT sin on him if he did so. Allah has also made it halal for the Muslim man to marry a practising Jewish or Christian woman (people of the book)
She would have to convert first
Yes it is possible, A muslim man may either marry a muslim woman, a christian woman, or a jewish woman
No, Christianity is heaven religion but Hindu is stone statue worshipers
Yes, but he or she will need to convert to join the Church of England.
Basically She is Strong believer of catholic christianity,and also wants to convert Rajiv ji,as christian, She is still a christian,sonia gandhi marry her daughter Priyanka to a converted christian, Vadheras(Punjabi Hindus) now after conversion called vadra (New cast created by conversion),Robert & Richard two brother, Robert Vadra father Raj kumar Vadhera converted as christian because he wants his business of brass to be export in Christian Europe,his wife is a christian