You can File the Case of Cheating and Rape Against Him.
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You can file an FIR against the boy under section 154 of CrPc 1973 and get him booked for cheating you. If you have had physical relations with him without your consent or if you can prove that since beginning he was in relationship with you and giving you false promise of marriage just to have physical relations then you can also file case of rape against him.
Relevant sections are provided below:
420. Cheating and dishonestly inducing delivery of property.—Whoever cheats and thereby dishonestly induces the person deceived to deliver any property to any person, or to make, alter or destroy the whole or any part of a valuable security, or anything which is signed or sealed, and which is capable of being converted into a valuable security, shall be punished with imprisonment of either description for a term which may extend to seven years, and shall also be liable to fine.
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