Agreed that Raman can be very inconsistent when it comes to Adhi but you cannot deny that when it comes to the crux, his wisdom and love for Ishita & Ruhi always kicks in - even the Lohri puja track was because he thought Ishita had engineered it due to her New Year/Anniversary celebrations.
No way will he agree to such a thing and I guess that would be the saddest day for Raman coz he would have to realise he cannot have his cake and eat it as well. He will have to let Adhi go.