Abhimanyu doesn't remember the fire incident bit and why akshara is behaving this way. He remembers the fun they had, akshara confession and mang bharo in bits and pieces. He knows akshu loves him but is denying and she is torturing him so he wants to torture him back.
He knows doing all this from behind while being engaged to her sister is wrong that's why he was guilty but he himself wants to call off the engagement as he said manjari maa will understand . He just needed akshu's acceptance of the relationship that's why he called her to the office and he would have anyhow broke the alliance if akshu confessed. But she again denied him which made him more angry that's why he would call her to the engagement.
But he will get to know of her sacrifice in the engagment function as she jumped in fire and that bracelet. So second way to call off the engagement with Aarohi is to expose her lies because by now it's clear abhimanyu anyhow wants to break this alliance. He will expose aarohi through this route as ak won't accept the relation. Let's see aage kya dikhate hai.
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