Yes, I agree with what everyone has said. There are some great points! 😊
The relationship was a lopsided failure from the start. Armaan never truly loved Mallika--maybe deep concern for her at times--but never love. As he said right after the V-Day hug that "pehli baar sacha pyar hua" ( 😳 if I spelled any of that wrong) which shows he never really loved anyone before Jassi.
About Armaan's flirtatious nature 😛, what I don't really understand is that if Mallika grew up with Armaan for practically her whole life, how was she not aware of his tendency to flirt with so many women?? 😕
But Armaan is certainly at fault for not telling Mallika his true feelings about her and he should have told her early off that he did not love her-- that would've saved a lot of heartache later on. But then again we have to understand that Armaan had a lot of pressure from his parents to marry Mallika from the start. The issue was kind of like duty vs. true love so because the relationship started mainly on the basis of duty, maybe that's another reason Armaan never truly loved Mallika.
Overall, I think the basis on which Mallika and Armaan got together was more to blame for the breakup than was any specific individual.