Well There is nothing wrong with choosing your favourite character or loving it more than others, it's also very natural to be protective about that certain character so if you love Rohit and is not satisfied with the coverage he is getting, it's perfectly normal to voice your opinion BUT in order to prove your opinion right, it's NOT fair to hate other characters or bash them in your every comment or posts...
I feel for both of them if madhav is not so good looking, he has been teased and look down upon and have a major inferiority complex... On the other hand Rahul, even after his good looks is being treated wrong by the princi mam, who he respect so much and has been staying positive even after loosing his parents and have no fault of his own other than being so good looking (a good friend, business person, reaspectul wana be son and so on)
So all in all, they are showing both the expects... And story has still to unfold in more than one ways to know what's going to happen...
P.S. you have to always be happy and will have an upper hand as the story is about Madhav and Aradhna (we all know since the start that it's about s beautiful girl marrying a not so good looking guy) so chill :-)