Is it necessary for me to convert from Islam into Christianity to marry him?

s you know Islam and Christianity are monotheistic religions and they believe in two different Gods. Once you marry a person from different faith you are automatically expelled from the community/religion. This stands true for both religions.

So the choice you make depends on which faith you wish to follow after marriage.

There are 3 options which you can choose accordingly.

Option 1(marry outside religion)

Special Marriage Act, 1954 enacted to provide a special form of marriage for the people of India and all Indian nationals in foreign countries, irrespective of the religion or faith followed by either party. In the final wording, the law sought to legitimize marriages for those willing to renounce their profession of faith altogether ("I do not profess the Hindu, Christian, Jewish, etc. religion"). This is civil marriage which has no affinity to any religion.

Option 2 (both of you decide to be MUSLIMS)

Muslim women are forbidden from marrying non-Muslim men according to Islamic law. All major groups of Muslims have forbidden Muslim women from marrying non-Muslim men. Hence he has to convert to Islam if you both plan to be Muslim. (but a Muslim man can marry Christian woman)Interfaith marriage in Islam

Option 3 (both of you decide to be CHRISTIANS)

In Christianity marriage is a sacrament. Both partners do not have to be a Catholic in order to be sacramentally married in the Catholic Church, but both must be baptized Christians (and at least one must be a Catholic). Non-Christians cannot receive the sacraments. This means you have to convert to Christianity if you both decide to live as Christians. Marriages between a Catholic and an unbaptized person are not sacramental and fall under the impediment of disparity of worship (Code of Canon Law, Cn.1086 § 1)

Code of Canon Law

The Catholic Church calls the union of a Catholic to someone who has not been baptized a disparity of cult.

A non-baptized person is not a part of the Christian family. When it involves someone who has not been baptized then the marriage requires an express dispensation from the bishop in order for the union to be considered valid.(as in your daughters case)

THE UNION BETWEEN A CATHOLIC AND A NON-BAPTISED SPOUSE IS NOT CONSIDERED SACRAMENTAL. (even if it happens in a Church)

In cases where a Catholic is marrying someone who is not a baptized Christian – known as a marriage with disparity of cult – “the church exercises more caution,” A “dispensation from disparity of cult,” which is a more rigorous form of permission given by the local bishop, is required for the marriage to be valid.

( Interfaith marriage in Christianity - check inter religious)

• The fact that society is patriarchal has a crucial role in the decision making process.
• In India most inter-faith marriages happen in the format of option 1 ie using Special Marriage Act, 1954.