It seems Nivi has put up a condition that only after he gets engaged to her , she will start the work of that orphanage-school which was Devika's mother's dream and by the time he marries her , she will complete the whole construction ... Ravi was left with no choice but to agree because the land is in Luthria company's name now .. so he cannot approach any other company either .. in short he is doing it for Devika only ... Even Chachi understood ... so the slap precap was misleading as later Chachi blessed Ravi for the sacrifice he is making for Devika ..