Nice question!
It got me thinking really...
I can't say I "love" SA,KP, or JS in person- because we only know them from the media's perspective. Not in person. So I can't really comment on them personally.
But from what I know and see, KP is a very humerous guy, with good looks, caring, and very direct. Also, he's a brilliant actor - the reason why I fell for him, and an amazing dancer.
Same goes for Shubhangi- in a way, she's a lot like my idol- the way she separates her personal life from her professional life. I havent heard any bad mouthing from her, and she just seems likea very sweet, down to earth kind of person.
Jatin Shah is VERY sexy, lol but also- I find him very cute and shy. He's very modest, and I like that quality in a guy.
But all in all- if I were to say I love them in person, it would be wrong. I love them because of their characters. I fell in love with Robbie Sabarwal, Kasturi Chawla, and Raunak Singania (before he became all evil)