Harsh said "kabhi kisi par itna vishwaas mat karna ki jab woh vishwaas toot jaye, toh tum bhi toot jao" (or something to that effect) and he's absolutely right, especially if your trust is unfounded. Yes, Akshu's cheating was such a trivial thing cause it's a game but it reminded Abhi of all the times she did overlook his feelings for her happiness (i.e., her family because Akshu's happiness = 75% Aarohi, 15% family, 10% Abhi). Abhi's immediate flashbacks,"mera meri behan ke saath kabhi na tootne wala rishta hai" "stop Abhimanyu!" and heart attack conversation, was Akshu choosing herself over Abhi. For example, she was choosing her relationship with Aarohi (which the Abrohi marriage 'miraculously' fixed) over him in the first flashback. In all three examples, they never truly discussed the root of those conflicts (ex. Akshu explaining why she said what she said after Manish's heart attack) and so Abhi's insecurities are lingering.
Abhi is going to let Aarohi get away with relatively little repercussions, again (like the Abrohi wedding kaands) cause he doesn't care about her. He only sees Akshu and that's evident by the precap where he angrily looks at Akshu dancing, not searching for Aarohi. It's Akshu's silence (well she tried to tell you Abhi) and support for her sister that will enrage him the most because it's another betrayal on top of the unaddressed pile.
If and when Abhira do separate/have a long misunderstanding/conflict, I think it'll bring Harsh and Abhi together because Abhi might recognize that his father's concerns with Akshu weren't as ill-founded as he thought.
Other
Is it just me or is Abhira's chemistry a thousand times better when Pranali's in those sarees. Like the chura ke dil tera look was so cute they rocked it.
"Didi ke dewar" "Bhabhi ki behan" was cute (if you see it separately from yk the accident). Neil is definitely attracted to Aarohi and he understands her far better than Akshu does. In a crowd, he always gravitates towards her and I wonder why that is. Because he knows her nature so well (liar with a lot of issues as he pointed out) so what is it that brings him back to her.
Also, I think today's the first time Aarohi called Akshu her didi (indirectly but still).
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