Well, I guess there is no doubt that Azaan was a horrible boyfriend, and nobody questions whether KA love was true. I guess the topic of debate is SA love. I agree with those in the minority in this case- Azaan's love with Saniya was true, not simply an infatuation. They were incredibly cute together (check out videos on pg. 1), and not only that, they found their way to each other without destiny playing a hand. They loved each other for their qualities, not because they were bound/ brought together by forces out of their control.
Destiny sounds romantic and whimisical, but the truth is that destiny is another way of saying it doesn't matter what you do, you are still going to end up this way, and AA are a perfect example of this. Despite their own khwaish and dreams, they had to (pretty much forced to) come together.
AA love is conditional because it could only develop when destiny kicked in- Azaan loves Afreen not because of her qualities, like he did Saniya when he met her, but because she is pregnant with Kabir's child. If it had not been for destiny, Azaan would've lived just as happily with Saniya (Saniya was positive before AA marriage), and Afreen with Kabir, so to say that destiny brought them together because they were each other's true love wouldn't be correct because true love is whoever makes you happy and complete, which they were with their respective partners even before they met each other.
PS- Someone earlier said that Azaan did not have the same love in his eyes for Saniya as he did for Afreen, but I think that is because Azaan's character was not able to convey that emotion because Yasir Shah was so new to acting. I don't think that actually has anything to do with SA love.