I guess abhi has some button like all of a sudden his feelings for ak vanished ( button off ) and in the same way he has again started having feelings for ak ( button on ).
Earlier he was not even looking at ak properly but now he's dreaming and staring at her , like how?!!
Jab car door mein hand fasa and genuinely usse lagi thi tha tab his attitude was like oh lag gayi usse but now jab utna nahi laga tab he's worried ki uska haath kahi lag na jaaye.đ
This is the problem of serial makers they show sudden change of feelings of characters and we're not able to relate to them. In ak case they are showing that she's concerned and also trying to be strong also she's consistent with that.