Honeymoon stuff i think he was taking care of her and he showed his feelings rather than saying anything. But i dnt that trip was make or break kunjs official feelings. I think it was all situational. Then the accident cause kunjs guilt trip and i think he reacted the way he did cause he felt obligated to help yuvi and twinkle pushing him and saying what she was saying i feel like he said what he said more or less senslessly and angirly. Then after the robbery i think kunj realized how mych twinkle is doing for him and it knocked him back to being kunj.. before the yuvi incident he was caring and a husband to twinkle and somwhere after yuvis accident that was lost. I think he went back to normal after the robbery. He forgot that they are husband and wife and twinkle is supporting him on her end and he hasnt been doing the same. So now he is on a second guilt trip for not being a good husband to twinkle. So hes out to change that. I thimk we all know where kunj stands. I think at the end of the day hes either ignoring his feelings when he is harsh with twinkle so he can brush it off. Or, he is genuinly confused and just going with the flow at the moment and being a good husband which he thinks he should be.
Personally i think he knows how he feels and tries to purposely pick fights and get angry at twinkle like when he said they are shamy hubby and wife, because he doesnt want twinkle to think more of their relationship because he himself is running from them. And he uses his marriage to twinkle and being her husband to love and care for her and be there for her .. he uses being her husband as an excuse to do everything he wants for her cause he loves her but hes running.