Dear Friend,
Hinduism by the way is no religion like Islam and Christianity . It is way of life, so it is very liberal. A Hindu remains a Hindu and does not sin by marring a person from other community. And going to the root of Islam greatest of all prophets mosses or musa have not said the same and in fact king Solomon so called Suleiman in islam has married girls from different community. God never punished him for that. Emperor Akbar married a rajput princess and she was allowed to follow Hinduism after her marriage. Allah was not angry on him, is he not a muslim. I can give you various examples. Better to use your brain that blindly following orthodox rules which was made for selfish reasons. And if you still afraid of Allah better patronize Hinduism. Please note all of the Muslims now in India were Hindus only before mugals came here. Then why not you come back. Love is God and God is Love. I can guarantee nor Allah or any other God will be angry on you. I personally know such people who have done such marriage living happily. All the best..