At present he is not married, so better to marry him right now. If his relatives is locked him in room then you have to file habeas corpus petition before the high court. The police will produce him before the court. A writ of habeas corpus is used to bring a prisoner or other detainee before the court to determine if the person's imprisonment or detention is lawful. If your boy friend is strong you can live with him.
Marriage is not a game for play. Marriage is a sacred or contractual relationship in India. Marriage, as its legal consequences, entitles both the persons to cohabit; the children born out of a legal wedlock have legitimacy as legal heir; It is the joining of two different families. So a forceful marriage also make disturbance in future if the person have a brave mind to face the reality and fight against the barricades.
30 days notice is enough for a valid court marriage but a contesting divorce cases take more than 5 years, mutual divorce will take 6 months.
Live in relation which can also be referred to as cohabitation, in essence, is an arrangement whereby two people agree to live together on a permanent or long term basis in a sexually and/or emotionally intimate relationship. The Court said that a man and a woman can live together as per their wish even without getting married. It further said that it may be immoral for the society but is not illegal. There is no specific law on the subject of live in relationships in India. There is no legislation to define the rights and obligations of the parties to a live in relationships, the status of children born to such couples.In a landmark judgment on 13 April 2015 by the bench consisting of Justice MY Eqbal and Justice Amitava Roy, the Supreme Court ruled out that couples living in live-in-relationships will be presumed legally married. In S PS Balasubramanyam vs Sruttayan [AIR 1992 SC 756], the SC had said, "If a man and woman are living under the same roof and cohabiting for a number of years, there will be presumption under Section 114 of the Evidence Act, that they live as husband and wife and the children born to them will not be illegitimate."