Interesting theory Chitra!
I think that if you go in with the idea that you will be able to change a person then that really isn't love coz love should be unconditional....I personally think that you should love a person for who they are rather than what they can be....I would want that from anyone who would love me and I would expect the same from myself as well!
I do think however that girls are attracted to guys like Armaan more than to guys like Purab just because of their personality. Most women prefer men who are more "promiscuous" and "hyper" if you want to call it that than men who are subdued. I guess it's human nature so it's the same with men as well. They prefer women who are more lively and interactive than someone who would sit still. So liveliness I definitely believe is what initially attracts most people.
I personally do not believe in love at first sight but I guess first impressions definitely matter and it doesn't make too much of an impression when you just sit calmly and not do anything dramatic to attract attention.
In Jassi's case though I said it before and I'm saying it again, I'm not sure what attracted her to Armaan (maybe I just don't see it 😕). But like you said, Chitra, maybe it was his bubbly character and his playboy charms. And all that time she spent with him gave her ample opportunity to finally fall in love with the guy (again, I don't understand it but it's her choice). Whatever it maybe it stands that she's in love with him and not Purab and is bound to get married to him! So all we have to do is wait for that day!😃