Today's (March 5) episode reiterates how Akshu and Abhi aren't on the same paths anymore because they can't see their past the same way and therefore, its hard for them to understand each other.
In this new leap, we never see Akshu remember her 'Abhi'. The Abhimanyu her mind goes to is the one she saw at Neil's funeral. The one who threw divorce papers on her face, papers he just had lying around, and inadvertently insulted their love. The one who threw her biggest trauma in her face and abandoned her after her miscarriage (regardless of one or children lost, she did miscarry that day). The happier memories of Abhira are thrust into her face, whether that be by methi-daana or Abhir's cute antics. Of course she can't forgive him easily - she's so struck by that day that her PTSD of watching another loved one die before her, miscarrying, and childhood trauma is all-consuming.
Whenever Abhi remembers the past, he recalls their happier days, their sweet moments. I don't think Abhimanyu is seeing the full picture of what happened to Akshara that day. He sees how venomous his words were, like the Sirat taunt, but I fear he doesn't understand how much cumulated that day for her. Maybe he thought that she wouldn't go far when he told her to leave and so he's hurt she 'moved on'. Which is why I love Akshu's "I reject your apology" because it reminds him how much she suffered too and how what she suffered isn't too different from him.