I can explain why???
He is ready to say sorry but ishu wouldn't listen eg:- DNA kand were he said sorry and thank u but ishu with her long lecture didn't spare him 😆 he is scared of long lecture .
Even if he says sorry ishu will fight taking all his deeds from misbehaving with ruhi to dance holi to insult in Chinese ...etc... He can't risk so using ideas that's what I feel .
Next is he dislikes her because she shows him the mirror of truth and he dislikes ladies reason shagun doesn't want to get close to any girl in scare of losing them .
He is using ishu to get ruhi because ruhi is angry and ishu and ruhi are a team now if one hurts other defends each other .
When one day when ishu gets mad at Raman and tends to move out he might use ruhi to get back ishu in his life .
So let's enjoy what's given to us .